These Cobalt Drill Bits are engineered for extreme drilling performance in tough materials. Constructed from industrial-grade M35 cobalt high-speed steel, this bit delivers exceptional strength, heat resistance, and durability—lasting up to 10× longer than standard bits. Designed for high-heat applications, cobalt retains hardness at elevated temperatures, ensuring consistent cutting performance even when drilling hardened metals.

A precision cold-fired manufacturing process reduces internal stress in the metal, improving ductility and extending tool life. The variable helix flute design accelerates chip removal, while the multi-edge cutting tip starts drilling up to 10× faster with minimal walking.

Key Features

• M35 Cobalt High-Speed Steel – Industrial-grade strength for extreme jobs

• 10× Longer Life – Built for durability in demanding materials

• Superior Heat Resistance – Maintains hardness at high temperatures

• Cryogenically Hardened – Extra toughness for drilling hard metals

• Cold-Fired Stress Relief Process – Improves durability and flexibility

• Variable Helix Flutes – Faster drilling and efficient chip removal

• Multi-Edge Starting Tip – Starts up to 10× faster

• 135° Split Point Tip – Aggressive cutting without walking

• Four Cutting Edges – Faster, cleaner holes with less effort

• Tri-Flat Shank – Prevents spinning under high torque loads

• 3/8" Shank Size – Fits standard drill chucks securely

Applications

Ideal for drilling into tough and high-strength materials:

• Stainless steel

• Heat-treated steel

• Cast iron

• Metal alloys

• Wood

• Plastic

Perfect for professional contractors, machinists, metal fabricators, automotive work, and heavy-duty shop use.