Cleveland C70366 2213 60PC #1 TO #60 CO TYPE J SET. Cleveland M42 cobalt heavy duty jobber length drill bit set. Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys. Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools. High red hardness for extended wear life in high heat conditions. Applicable for aluminum, copper alloys, inconel, titanium alloys, tool steel, die steel, structural steel and precip-hard stainless. Product Details: Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools Round shanks allow use with a wide variety of toolholding systems High red hardness for extended wear life in high heat conditions Set includes #1 – #60 sizes drill bits. USA Tool Depot is a privately owned USA based company. We stock thousands of items from major brands and specialty manufacturers in order to provide you the items you need at competitive prices. Our goal is to ensure that your order is delivered as soon as possible. Please do not ask us to make false statements on these documents. PRIVACY STATEMENT —- SECTION 1 – WHAT DO WE DO WITH YOUR INFORMATION? When you browse our store, we also automatically receive your computer? USA Tool Depot wants to provide you with the best level of customer service possible. Add to Favorite Sellers. Sign up to Newsletter. View more great items!