Your Professional Drill Bit Manufacturer in China
- Cutting-Edge Technology for Precision Machining
- Rigorous Quality Control for Reliability
- Customized Solutions for Flexibility
- Global Presence for Efficient Supply
Focus On Customized Solutions
As a leading drill bit manufacturer, we offer fully customizable solutions to meet your specific drilling challenges. Whether you need unique geometries, specialized coatings, or application-specific designs, our engineering team collaborates with you to develop high-performance drill bits optimized for your materials and processes.
Product Series
Wood Drill Bits
MILLSTONG manufactures wood drill bits like brad point, spade, auger, and Forstner bits. With precise grinding and stable production lines, we ensure clean cutting performance and high output to meet woodworking and furniture industry needs.
Metal Drill Bits
MILLSTONG specializes in producing metal drill bits such as HSS twist drills, cobalt bits, step drills, and countersinks. With advanced heat treatment and machining processes, we ensure high hardness and durability, supporting millions of pieces in annual production for industrial and custom needs.
Concrete & Masonry Drill Bits
MILLSTONG produces concrete and masonry drill bits such as SDS plus, SDS max, and carbide-tipped bits. With robust manufacturing capacity and strict quality control, we ensure high impact resistance and durability, meeting demands for construction, renovation, and heavy-duty drilling applications.
Tile & Glass Drill Bit
MILLSTONG produces tile and glass drill bits such as spear-point and diamond-tipped types. With fine grinding and advanced brazing techniques, we ensure clean entry, reduced cracking, and consistent quality, meeting high standards for ceramic, glass, and tile drilling applications.
Multi-Purpose Drill Bit
MILLSTONG manufactures multi-purpose drill bits designed for drilling wood, metal, plastic, tile, and masonry. With advanced materials and versatile cutting edges, our bits deliver stable performance across various materials, supporting both DIY and professional applications with high production capacity.
Annular Cutter Drill Bits
MILLSTONG produces annular cutter drill bits, including standard, premium, and custom sizes. Designed for fast, precise hole cutting in metal, our bits feature durable carbide tips and advanced heat treatment, ensuring high performance and long tool life for industrial applications with large-scale production capacity.
Millstrong – Precision Drill Bit Manufacturer
Millstrong is a high-tech enterprise specializing in the R&D, production, and sales of high-end drill bits, dedicated to providing high-precision, high-durability, and high-performance drilling solutions for global industrial applications. Equipped with advanced manufacturing facilities, a stringent quality control system, and a professional R&D team, our products are widely used in metalworking, automotive manufacturing, aerospace, mold making, and energy equipment industries, earning trust from clients worldwide.
Why Choose Millstrong?
- 20+ Years of Industry Expertise – Serving aerospace, automotive, construction, and other sectors
- Competitive Pricing – Direct factory supply with no middleman markup
- Fast Response – Prototypes in 1-2 weeks, bulk production in 3-4 weeks
- Professional Customization Services – One-on-one technical support from material selection to geometric design
- Quality Assurance – ISO 9001 certified, SGS test reports available
- Global Shipping – Samples via DHL/FedEx, bulk orders by sea/air freight
Blog & News
Annular Cutter Regrinding Explained: Tools, Techniques, and Cutter Types
Regrinding annular cutters (also known as core drills or broach cutters) can significantly extend their service life, but it must
Complete Guide to Drill Bit Geometry: Key Dimensions, Angles, and Performance Factors
As a commonly used cutting tool, the geometry of a drill bit directly affects machining accuracy, chip evacuation efficiency, and
Drill Bit Types Explained: How to Choose the Right Bit for Metal, Wood & Concrete (2025 Guide)
There are many types of drill bits, and at first glance, it might be overwhelming. However, if we classify them
Your questions answered
Common questions
What is your minimum order quantity (MOQ)?
Standard Products: MOQ 500 pcs (mixed specifications allowed).
Custom Designs: MOQ 1,000–5,000 pcs (complexity-dependent).
What is your production lead time? How do you ship?
In-Stock Items: 3–7 days for shipment (standard models).
Custom Orders: 15–25 days (includes sample approval).
Shipping Methods:
- Small batches: DHL/FedEx air freight (3–5 days to Europe/US).
- Large batches: Sea freight (20–40 days, FOB/CIF quotes available).
How do you ensure quality? What is your inspection process?
Quality Control:
- Raw material testing (hardness, composition analysis).
- 100% dimensional inspection during production (±0.02mm tolerance).
- Salt spray testing (anti-rust), lifespan testing.
Warranty: Free replacement within 1 year for non-human damage.
What if we receive defective products?
Provide clear photos/videos of the issue. We will:
- Minor issues: Replace parts or compensate.
- Major issues: Full refund or re-production.