In drilling operations, there are various types of drill bits, each with its strengths. Wood drill bits ensure precise holes, metal drill bits resist heat and wear, masonry drill bits deliver powerful demolition, and tile drill bits prevent cracking and slipping.
Choosing the wrong drill bit can lead to minor issues, such as reduced efficiency and rough hole edges, or significant problems, like bit damage and material damage. Accurately matching the drill bit type to the material is the crucial first step in ensuring construction quality and improving work efficiency.
As professional craftsmen know, “A good horse needs a good saddle, and a good job requires the right drill.” But are you familiar with the common types of drill bits on the market? This article will take you on a deep dive to explore them.
What is a Drill Bit?
A drill bit is a cutting tool used to create holes in materials. It is typically mounted on power drills, hand drills, or machine tools (such as bench drills or milling machines) and operates through rotational or impact motion to produce circular holes in metals, wood, concrete, plastics, ceramics, and other materials. Specialized drill bits can also meet unique processing needs, such as enlarging holes, countersinking, hinge boring, core sampling, and more.
Structure of Drill Bits
The structure of a drill bit directly affects its drilling efficiency, precision, and durability. While different types of drill bits (such as twist drills, SDS drills, brad-point drills, etc.) may vary in details, their core structures typically include the following key components:
(1) Point
- Function: Responsible for initial positioning and material penetration, influencing drilling accuracy and stability.
- Common Types:
- Standard Twist Drill Point: 118° or 135° angle, versatile for general use.
- Brad-Point: Features a central spur to prevent deviation when drilling wood.
- Flat Head (Tile/Glass Bit): Features a diamond or carbide tip for anti-slip drilling on tiles and glass.
(2) Cutting Edges
- Primary Cutting Edge: Directly cuts material, determining drilling efficiency.
- Chisel Edge: Located at the center of the point, it aids in centering but may increase resistance.
- Secondary Edge: Refines the hole wall for a smoother finish.
(3) Flutes
- Function: Expel drilling debris to prevent clogging and overheating.
- Common Designs:
- Spiral Flute (Twist Drill): Suitable for metals and wood (e.g., twist drills).
- Straight Flute: Used for brittle materials (e.g., brass, plastic) to reduce tearing.
- Deep Flute (Auger Bit): A wood drill bit designed for rapid chip removal.
(4) Shank
- Function: Connects to the drill or chuck, impacting torque transmission and stability.
- Common Types:
- Round Shank: Universal design for standard drill chucks.
- Hex Shank: Anti-slip, commonly used with impact drills.
- SDS Shank (SDS-Plus/SDS-Max): Designed for rotary hammers, with a quick-release mechanism.
(5) Neck
- Function: Connects the cutting edges to the shank; some drill bits display brand or specifications here.
For more detailed knowledge about drill bit structures, please read [Detailed Explanation of Drill Bit Structure].
There are many types of drill bits, and at first glance, it might be overwhelming. However, if we classify them by purpose, it can simplify things. Let’s categorize drill bits by their intended use to help you quickly select the right one for your specific needs.
Wood Drill Bit
A wood drill bit is a type of drill bit specifically designed for drilling holes in wood. These bits typically have a sharp, pointed tip (called a spur or brad point) for precise positioning and clean entry, as well as flutes (grooves) to remove wood chips efficiently.
Brad-Point Drill Bit
The Auger Drill Bit is specifically engineered for deep wood drilling applications, featuring a spiral flute design that enables rapid chip ejection while maintaining smooth operation. Its self-feeding screw tip pulls the bit into the material, reducing manual pressure and preventing bit wandering.
Advantages of Brad-Point Drill Bits
✅ Precise Positioning: The center spur ensures the drill bit stays in place, making it ideal for fine woodworking tasks (e.g., mortise and tenon joints, furniture assembly).
✅ Smooth Hole Walls: Pre-cutting side spurs minimizes wood tearing or splintering.
✅ Efficient Chip Removal: The spiral flute design prevents wood chip buildup, improving drilling speed.
Applications
- Furniture making (e.g., installing hinges, drilling mortises).
- Woodworking DIY (drilling for joinery or decorative purposes).
- Plastic/laminated board drilling (requires controlled speed to prevent melting).
Auger Drill Bit
The auger drill bit is specifically engineered for deep wood boring applications, featuring a distinctive spiral flute design that enables rapid chip removal while maintaining drilling stability. Its unique screw tip provides self-feeding action, significantly reducing the required downward pressure during operation.
Advantages of Auger Drill Bit
✅ Deep Hole Capability—Ideal for timber beams, log boring, and thick woodworking projects.
✅ Aggressive Chip Clearance—Helical flutes prevent clogging in dense or resinous woods.
✅ Self-Pulling Action—Threaded lead screw ensures steady progress without excessive downward force.
Applications
- Construction framing (post holes, timber joints)
- Carpentry (stair railings, bed frame assembly)
- DIY projects requiring clean, deep holes in solid wood
Note: Not suitable for metal/concrete. Use low RPMs when working with hardwoods to avoid overheating.
Forstner Drill Bit
Forstner Drill Bit is a specialized woodworking drill bit renowned for its unique circular cutting edge + central positioning teeth design. It can create blind holes with smooth edges and perfectly flat bottoms in wood, and is capable of overlapping drilling and angled hole drilling, making it an essential tool for high-end furniture making and precision woodworking.
Advantages of Forstner Drill Bit
✅ Expert in Flat-Bottom Blind Holes: The flatness of the hole bottom far exceeds that of ordinary drill bits, making it ideal for precisely installing hardware such as hinges and concealed screw caps.
✅ Zero Edge Tear-Out: The outer circular blade pre-cuts wood fibers, leaving the hole edges splinter-free—perfect for fine finishes (e.g., high-end furniture surfaces).
✅ King of Special Applications
- Overlapping Drilling: Can partially overlap existing holes for continued work (other drill bits would slip).
- Angled Drilling: The absence of a center point allows drilling at angles of 15°–30° (e.g., chair armrest joints).
✅ Preferred for Large-Diameter Holes: Common diameters range from 12 to 50 mm, making it more suitable than standard drill bits for large holes (e.g., countertop faucet installation holes).
Applications
- Furniture Hardware Installation: Hinge mortises, concealed screw holes
- Decorative Woodworking: Inlaid wood joints, artistic hole designs
- Musical Instrument Crafting: Guitar tuning peg holes, soundhole finishing
- DIY Projects: Wooden lamps, clock component drilling
Note: Not suitable for metal or plastic—exclusive to woodworking.
Spade Drill Bit
The Spade Drill Bit (also known as a flat wood bit or paddle bit) is a flat, shovel-shaped wood drill bit specifically designed for quickly drilling large-diameter holes (typically 6-50 mm) in wood. Its simple structure and low cost make it an economical choice, though the drilled edges are relatively rough, making it suitable for applications where hole-wall precision is not critical.
Advantages of Spade Drill Bit
✅ Ultra-fast drilling: The flat design reduces friction, enabling much faster drilling of large holes compared to twist drills.
✅ Low cost: Priced at about 1/5 of Forstner drill bits.
✅ Easy to operate: No specialized skills required, making it ideal for DIY beginners.
Applications
- Easy to operate: No specialized skills required, making it ideal for DIY beginners.
- Rough construction work: Drilling holes for electrical wires or plumbing pipes through walls.
- Temporary drilling: Creating holes in construction templates or packaging crates.
- Low-precision needs: Structural connections in hidden areas.
Metal Drill Bit
A metal drill bit is a type of drill bit specifically designed for drilling into metal, including steel, aluminum, brass, and other hard materials. Unlike wood drill bits, metal drill bits are engineered to withstand high friction and heat while maintaining sharpness.
Twist Drill Bit
The Twist Drill Bit (also known as an HSS drill bit, or high-speed steel drill bit) is one of the most common and versatile drilling tools. It features a spiral flute design that enables precise drilling of circular holes in various materials, including metal, wood, and plastic, through rotational cutting.
Key Features of Twist Drill Bit
✅ Spiral Flutes (Flutes):
- Typically designed with double spiral grooves to efficiently remove chips, preventing clogging and overheating.
- Suitable for various materials, including metal, plastic, and wood.
✅ 118° or 135° Point Angle:
- 118°: General-purpose, ideal for soft metals (aluminum, copper) and plastics.
- 135°: Better for hard metals (stainless steel, alloy steel), reducing “bit walking.”
✅ Material Options:
- HSS (High-Speed Steel): Cost-effective and durable, suitable for standard metals and wood.
- HSS-Co (Cobalt Alloy): Contains 5%-8% cobalt, heat-resistant, and is ideal for stainless steel, titanium, and other hard metals.
- TiN/TiAlN Coating: Titanium-coated (gold/black), reduces friction and extends lifespan.
Selection Recommendations:
- General Household Use: Choose HSS titanium-coated drill bits.
- Stainless Steel/Hard Metals: Opt for HSS-Co 8% cobalt drill bits.
- High-Precision Needs: Select cobalt + titanium-coated drill bits.
Cobalt Drill Bit
Cobalt Drill Bits are industrial-grade drill bits specifically designed for high-hardness metals such as stainless steel, titanium alloys, and hardened steel. By adding 5%-8% cobalt to high-speed steel (HSS), these bits significantly improve heat resistance and wear resistance, making them the go-to tool for machining difficult-to-cut materials.
Key Features of Cobalt Drill Bit
✅ Exceptional Heat Resistance: Cobalt alloy retains hardness even at 650°C (1,202°F), far outperforming standard HSS bits (which soften at 500°C / 932°F), making them ideal for sustained high-speed drilling.
✅ Extreme Wear Resistance: Cobalt enhances the stability of the steel’s crystalline structure, extending the bit’s lifespan by 3-5 times when drilling stainless steel, titanium alloys, and cast steel.
✅ Professional-Grade Geometry:
- 135° Point Angle: Reduces axial resistance when drilling hard metals, preventing bit walking.
- Optimized Flute Design: Improved spiral angle minimizes chip buildup and edge chipping.
✅ Surface Treatments: TiAlN Coating (black-gold): Further reduces friction, ideal for gummy materials like titanium alloys.
Usage Tips:
- Speed Control: Hard metals require low RPM + high feed pressure (e.g., 500 RPM for stainless steel).
- Cooling is Mandatory: Drilling stainless steel without coolant can destroy the bit in under 10 seconds!
- Avoid Interrupted Cuts: For materials like titanium alloys, ensure continuous feed to prevent edge chipping.
Step Drill Bit
Step Drill Bits are specialized drill bits designed for thin sheet materials (e.g., metal sheets, plastic panels, aluminum profiles). Their unique multi-tiered stepped cutting edges allow for gradual hole enlargement from small to large diameters in a single operation, eliminating the need for bit changes. They are particularly useful for electricians, sheet metal workers, and DIY enthusiasts.
Key Features of Step Drill Bit
✅ Multi-Step Design: Features 3–10 tiered cutting steps (e.g., 4mm → 6mm → 8mm → 10mm) for flexible hole sizing.
✅ Burr-Free Cutting: Each step is precision-ground to ensure smooth edges, preventing deformation or fraying in thin materials.
✅ Versatile Compatibility: Works on metal sheets (≤3mm), plastic, PVC, and aluminum profiles; some models support wood.
✅ Efficient Operation: Saves time by avoiding frequent bit changes—ideal for electrical boxes, cabinets, and ventilation ducts requiring multiple hole sizes.
Common Applications:
- Electrical Work: Junction box holes, cable pass-throughs
- Sheet Metal Fabrication: Ventilation ducts, metal cabinet holes
- DIY Projects: Furniture hardware, plastic storage bins
- Auto Repair: Body panels, bracket mounting holes
⚠️ Not Suitable For: Thick metals (>5mm), concrete, or hardwood requiring high axial force.
Countersink Drill Bit
A countersink drill bit is a specialized tool designed to create conical recesses on material surfaces, allowing screw or bolt heads to sit flush with or below the surface for aesthetics, scratch prevention, or aerodynamic optimization.
Key Features of Countersink Drill Bit
✅ Conical Hole Machining: Typical angles: 60°, 82°, 90°, 120° (matching standard screw head tapers).
✅ Versatile Design: Can be used independently or integrated with step drills or combo drills for drilling and countersinking in one step.
✅ Material Options
- HSS (High-Speed Steel): For general metal/woodworking.
- Carbide-tipped: For use on stainless steel and composites.
- Diamond-Coated: For precision work on glass/ceramics.
✅ Compatibility: Works with hand drills, bench drills, and CNC machines.
Common Applications:
- Screw Installation:
- Furniture assembly (hiding wood screw heads).
- Mechanical parts (countersunk bolts in metal plates).
- Aerospace: Reducing drag on aircraft skins.
- Mold Making: Clearance holes for ejector pins.
- DIY Projects: Surface Leveling for 3D-Printed Parts.
Annular Cutter
Annular Cutters (also called Core Drills or Hole Saws for Metal) are specialized tools designed for drilling large-diameter holes (12–150mm) in metal with minimal material waste and efficient chip removal. Unlike traditional twist drills, they remove only a ring-shaped portion of the material, leaving a solid core intact.
Key Features of Annular Cutter
✅ Hollow-Core Design: Cuts a ring-shaped groove instead of grinding the entire hole, reducing power consumption by up to 80%.
✅ High Precision & Clean Edges: Laser-cut carbide teeth ensure ±0.1mm tolerance, ideal for bolt holes and precision fittings.
✅ Minimal Chips, No Overheating: Short spiral flutes quickly eject chips, preventing clogging and heat buildup.
✅ Extended Lifespan: Made of HSS-Co8% or carbide-tipped steel, lasting 5–10x longer than standard hole saws in metal.
Typical Applications
- Steel Structures: I-beam, steel plate, and pipe holes
- Machinery: Gearbox, hydraulic flange, and bearing seat holes
- Automotive: Chassis, frame, and exhaust system modifications
- DIY Metalwork: Custom brackets, railings, and storage racks
⚠️ Not for: Wood, plastic, or non-ferrous metals (use bi-metal hole saws instead).
Concrete & Masonry Drill Bit
A concrete drill bit (also called a masonry drill bit) is a specialized tool designed for drilling into hard, brittle materials like concrete, brick, stone, cement blocks, and mortar. Unlike wood or metal bits, it features a tungsten carbide tip that crushes and grinds through tough surfaces rather than making clean cuts, making it ideal for use with hammer drills for effective penetration.
Masonry Drill Bit
Masonry Drill Bits are specialized cutting tools designed for drilling into concrete, brick, stone, and other masonry materials. Featuring a hardened carbide tip, they withstand the abrasiveness of masonry while maintaining sharpness. Compatible with standard hammer drills (not to be confused with SDS drills), they are essential for construction, renovation, and DIY projects.
Key Features of Masonry Drill Bit
✅ Carbide Tip (Tungsten-Carbide): Ultra-hard tip (HRC 90+) crushes masonry instead of cutting, preventing rapid wear.
✅ Spiral Flute Design: Deep grooves efficiently remove dust and debris during drilling.
✅ Compatibility: Works with hammer drills (rotary + impact action) for faster penetration.
✅ Shank Types:
- Round Shank: Fits standard drill chucks (10–13mm max).
- Hex Shank: Prevents slipping in high-torque impact drivers.
Typical Applications
- Concrete: Anchor bolts, wall plugs, rebar holes
- Brick/Block: Ventilation, plumbing, electrical conduits
- Natural Stone: Sculpting, mounting hardware
⚠️ Not for: Metal, wood, or tile (use twist/TCT bits instead).
SDS Drill Bit
SDS drill bits are specialized bits designed for rotary hammer drills, featuring a unique SDS shank system (e.g., SDS-Plus, SDS-Max) that efficiently transfers impact energy for fast drilling in hard materials like concrete and masonry. Their core advantages lie in exceptional durability and maximum drilling efficiency, making them a staple in construction and renovation.
Key Features of SDS Drill Bit
✅ SDS Shank System
- SDS-Plus: 4–30mm diameter, the standard for home and light commercial use.
- SDS-Max: 12–50mm diameter, heavy-duty for industrial applications.
- Tool-Free Change: Quick-insert locking mechanism saves 90% bit-swapping time.
✅ Carbide Tip
- Tungsten carbide (WC) tip with HRC90+ hardness crushes concrete and stone effortlessly.
- Quad-flute design (on some models) boosts cutting speed and triples lifespan.
✅ Anti-Torque Structure：Precision grooves on the shank prevent slippage, ensuring 100% impact transfer.
✅ Chip Removal : Wide straight or spiral flutes eject debris quickly, preventing jamming.
Typical Applications
- Concrete Structures: Beam/column drilling, rebar anchoring.
- Masonry Work: Brick, cinder block, and partition wall holes.
- Stone Cutting: Marble/granite drilling (water cooling recommended).
- Demolition: Chiseling and breaking when paired with hammer mode.
⚠️ Not for: Metal/wood (impact force will shatter the cutting edges).
TCT Drill Bit
TCT (Tungsten Carbide Tipped) drill bits are industrial-grade tools designed for high-hardness construction materials. The bit features a tungsten carbide (WC) tip brazed onto the steel body, with a hardness of HRA 90+ and wear resistance 5-10 times higher than standard high-speed steel (HSS) bits. They are an efficient solution for drilling into hard materials like concrete, masonry, and tiles.
Key Features of TCT Drill Bit
✅ Ultra-Hard Tip
- Tungsten carbide (WC) tip with a Mohs hardness of 9.0, capable of handling quartz aggregates in concrete.
- Industrial brazing ensures strong bonding between the tip and the steel body.
✅ Impact-Resistant Design
- 4 or 6-flute structure disperses impact forces, extending lifespan.
- Reinforced shank reduces breakage risk.
✅ Chip Removal Optimization
- Wide spiral flutes (for concrete) or straight flutes (for tiles).
- Some models feature dust-removal holes for dry drilling.
✅ Versatile Compatibility : Fits standard rotary hammers (round shank) or professional hammer drills (SDS-Plus/SDS-Max).
Typical Applications
- Reinforced Concrete: Beam/column drilling (≤28mm), rebar anchoring.
- Masonry Work: Aerated bricks, fire-resistant brick holes.
- Decorative Materials: Marble, granite, vitrified tile cutting.
- Municipal Engineering: Curbstone, manhole cover openings.
⚠️ Not for:
- Metal/wood drilling (may chip the carbide tip).
- Non-hammer mode use (hammer action required).
Tile & Glass & Ceramic Drill Bit
A tile & glass drill bit is a specialized cutting tool designed for creating clean, precise holes in brittle materials such as ceramic tile, porcelain, glass, mirrors, and glazed pottery. Unlike conventional drill bits, it features a sharp carbide or diamond-coated tip that gently grinds through these delicate surfaces without causing cracks or chips. This design allows for smooth drilling at low speeds while minimizing the risk of damage to fragile materials.
Tile Drill Bit
Tile drill bits are specialized cutting tools designed for clean, crack-free drilling in ceramic tiles, porcelain, glass, and stone. They feature tungsten carbide tips or diamond-coated heads to penetrate hard, brittle surfaces without shattering the material.
Key Features of Tile drill bit
✅ Hardened Tip
- Tungsten Carbide (TCT): Affordable option for standard ceramics.
- Diamond Grit: For porcelain, glass, and vitrified tiles (higher durability).
✅ Specialized Geometry
- Spear-point tip: Prevents walking/slipping on glossy surfaces.
- Slow spiral flutes: Controlled material removal to avoid cracks.
✅ Coolant Compatibility: Can be used with water cooling (critical for diamond bits).
✅ Shank Types: Round shank (standard drills), Hex shank (impact driver compatibility).
Typical Applications
- Tile Installation: Faucet holes, pipe penetrations.
- Mirror/Glass Work: Hanging hardware, decorative cuts.
- Stone Fabrication: Granite/marble vanity tops.
⚠️ Not for:
- Metal/wood drilling (will destroy the fragile cutting edges)
- Hammer drill mode (except specialized tile+concrete combo bits)
Glass Drill Bit
Glass drill bits are specialized tools designed for clean, shatter-free drilling in glass, mirrors, and tempered surfaces. They feature a diamond-coated tip or spear-shaped carbide head that grinds rather than cuts, preventing cracks and chips.
Key Features of Glass Drill Bit
✅ Diamond/Carbide Tip
- Diamond Grit: Electroplated or sintered diamond particles for precision grinding (best for borosilicate/tempered glass).
- Tungsten Carbide Spear Tip: Cheaper alternative for standard glass (3-12mm holes).
✅ Unique Geometry
- Hollow/Solid Core: Reduces vibration and heat buildup.
- Slow-Spiral or Straight Flutes: Minimizes lateral stress on brittle materials.
✅ Coolant Compatibility: Water Cooling Essential: Prevents overheating and micro-fractures.
✅ Shank Types: Round shank (standard drills), Hex shank (for better grip in handheld drills).
Typical Applications
- Glass/Mirror Installation: Drilling holes for mounts, brackets, or decorative elements.
- Aquariums/Terrariums: Customizing ventilation or plumbing holes.
- Tempered Glass (Pre-Drilling): Only before tempering process – never drill fully tempered.
⚠️ Not for:
- Metal, wood, or stone (will instantly dull the diamond coating).
- Hammer drill mode (pure rotary only!).
Diamond Drill Bit
Diamond drill bits are ultra-hard cutting tools designed for drilling into the most challenging brittle materials, including glass, quartz, ceramic tiles, and gemstones. Unlike traditional bits that cut, they use sintered or electroplated diamond particles to grind through surfaces with micron-level precision.
Key Features of Diamond Drill Bit
Diamond-Embedded Surface
- Industrial-grade diamonds (30-50 grit) bonded to a steel core.
- Sintered (for heavy-duty use) or Electroplated (for precision work).
Specialized Geometry
- Hollow Core: Reduces friction and heat (common for glass/ceramics).
- Solid Core: For small holes (<10mm) in hard stone.
Coolant Compatibility: Water cooling is mandatory to prevent diamond degradation.
Shank Types: Standard round (3-20mm), Threaded (for core drills >25mm).
Typical Applications
- Glass/Quartz Fabrication: Aquarium plumbing holes, laboratory equipment modifications.
- Tile & Stone Work: Porcelain tile shower fixtures, Granite countertop sink cutouts.
- Lapidary Arts: Drilling gemstones for jewelry, Fossil/rock specimen preparation.
Not for:
- Never use on metals/wood (diamonds will detach).
- Avoid tempered glass (will shatter unpredictably).
Other Types of Drill Bits
Based on the uses of drill bits, we provided a simple introduction to common types, helping you gain a preliminary understanding of different drill bits. In addition to the ones mentioned, there are also bits for drilling plastics/composite materials and special-purpose bits such as:
- Adjustable Wood Drill Bit — Used for drilling holes of various sizes in wood.
- Hole Saw Drill Bit — Used for cutting large-diameter round holes (e.g., door locks, pipes).
- Drill Saw Bit — Capable of both drilling and sawing, ideal for cutting square holes or enlarging holes.
- Coring Drill Bit — Used for extracting the core material, commonly applied to concrete or masonry drilling.
- Pocket Hole Drill Bit — Used for creating angled holes for woodworking joints.
- Rivet Drill Bit — Specially designed for removing rivets.
- Multi-Purpose Drill Bit — Suitable for drilling into various materials like wood, metal, and plastic.
- Screwdriver Drill Bit — Used with electric screwdrivers for tightening or loosening screws.
We will not go into further details for now. So, how should you choose the right drill bit?
How to Choose a Drill Bit
Choose the right drill bit based on material hardness, hole size requirements, and tool compatibility!
Earlier, we classified drill bits by their intended uses. When selecting a drill bit, several factors must be considered:
- Material Type: Choose drill bits according to the material you are working with. High-speed steel (HSS) drill bits are suitable for wood, fiberglass, PVC, and soft metals; carbide-tipped drill bits are ideal for tiles and masonry; cobalt drill bits can penetrate hard metals. There are also more versatile options like black oxide-coated and titanium-coated drill bits.
- Size: It is important to check the drill bit size to ensure the hole is neither too large nor too small for your intended purpose. If you are unsure of the exact size needed, consider purchasing a drill bit set that includes a variety of sizes.
- Job or Project Type: The type of work should also be a major consideration when choosing a new drill bit. Some drill bits, such as plug cutters and installer bits, are designed for specific applications, while others are more versatile and suitable for a wide range of projects.
Millstrong Professional Solutions
Drill bits can be categorized into five main types by application: metalworking (twist drills, annular cutters), woodworking (brad-point bits, auger bits), concrete/masonry (TCT carbide-tipped bits, SDS bits), tile/glass (diamond bits, tungsten carbide bits), and multi-purpose bits (step drills, countersink bits).
As a drill bit manufacturer with 20 years of expertise, Millstrong delivers customized solutions featuring proprietary carbide technology to optimize bit parameters for various materials, such as stainless steel and composites. Our in-house coating lab also enhances tool lifespan by 30%. With a global monthly production capacity of 500,000 units, our success stories include developing shock-resistant SDS bits that increase drilling speed by 40% for European clients and refining glass drilling technology, resulting in a 200% reorder growth for Middle Eastern customers.
For technical inquiries or partnership opportunities, please get in touch with us. Millstrong empowers precision and efficiency in every hole drilled.
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