M42 Cobalt Drill Bit Sets

Premium Cobalt Drill Bit Sets for Professional Metal Drilling

When you need longer tool life and dependable performance in demanding materials, cobalt drill bit sets are the professional's choice. At Drill Bit Warehouse, we offer one of the industry's largest selections of cobalt drill bit sets, including fractional, letter, number, mechanics length, left-hand, and specialty sets for virtually every metal drilling application.

Our flagship Type 200® M42 Cobalt Drill Bit Sets are proudly Made in the USA using premium M42 cobalt high-speed steel NAS907J for maximum heat resistance, durability, and long tool life. Designed for stainless steel, hardened steel, cast iron, alloy steels, titanium, and other difficult-to-machine materials, the Type 200 Series is built for demanding industrial and production environments.

Looking for outstanding value? Our Predator® M35 Cobalt Drill Bit Sets combine premium M35 cobalt high-speed steel with dependable professional performance at a more affordable price. They're an excellent choice for fabrication shops, maintenance departments, automotive work, contractors, and everyday metal drilling where reliability and value are equally important.

Why Choose Our Cobalt Drill Bit Sets?

• Premium M42 and M35 cobalt high-speed steel
• Superior heat and wear resistance
• 135° split points for fast, accurate starts
• Longer tool life in stainless steel, hardened steel, and alloy steels
• Reduced walking for cleaner, more precise holes
• Available in fractional, letter, number, mechanics length, left-hand, and specialty sets
• Ideal for machining, fabrication, maintenance, manufacturing, and industrial production

Whether you choose the premium performance of our Type 200® M42 USA-Made Cobalt Series or the exceptional value of our Predator® M35 Cobalt Series, you'll receive professional-quality drill bits backed by more than 20 years of industrial tooling experience.

Need help choosing the right cobalt drill bit set? Call our knowledgeable team at 800-350-TOOL (8665). We'll help you select the best drill bit set for your material, machine, and application.