6mm M35 Cobalt HSS Drill Bit Kit (10 Pcs) – High Heat Resistance for Cast Iron & Tough Alloys

When your work demands drilling into challenging materials like cast iron, hardened steel, or other tough alloys, you need a tool that’s engineered to perform under extreme stress. This 10-piece kit of 6mm M35 Cobalt HSS drill bits is the ultimate solution for professionals who require durability and precision. It’s designed to handle the high-friction, high-temperature conditions that cause standard drill bits to fail.

The standout feature of these bits is their construction from M35 High-Speed Steel, an alloy containing 5% cobalt. This isn’t just a surface coating; the cobalt is integrated throughout the steel’s molecular structure. This provides exceptional heat resistance, allowing the bit to retain its hardness and sharp cutting edge even when drilling through the most abrasive metals. This ability to withstand extreme temperatures directly translates to a longer tool life and consistently clean holes, project after project.

Each bit in this kit is precision-ground with a 135-degree split-point tip. This advanced design ensures the bit starts cutting immediately on contact, preventing the frustrating “walking” or slipping that can mar your workpiece. It eliminates the need for a center punch and guarantees accurate hole placement every time. The bit’s flute geometry is also optimized for efficient chip evacuation, which minimizes heat buildup and friction for a faster, smoother drilling process.

This comprehensive kit offers fantastic value and ensures you are always prepared. The key technical details are:

• Diameter: 6mm
• Total Length: 133mm
• Usable Flute Length: 87mm

For your convenience, the ten bits are housed in a durable, compact plastic case. This keeps them organized, protected from damage, and easy to transport to any job site. For any task involving tough alloys, this M35 cobalt drill bit kit delivers the high-performance, reliable results you need.