TINOR 10pcs M35 High Speed Steel & Cobalt Gold Twist Drill Bit Set - For Drilling Stainless Steel, Hard Steels, Cast Iron, Copper, Aluminum, Wood & Plastic

Professional quality item with a wide range of uses: M35 high speed steel 5% cobalt drill bits for drilling stainless steel and hardened steel materials. They can also be used to drill metals and other materials, such as cast iron, copper, high temperature alloy, titanium alloy, aluminum, hard plastics and woods, etc. Premium Materials: M35 High Speed Steel with 5% Cobalt. Durable and strong for longer use. Drill bits suitable for drilling tough metals, including stainless steels, Cr-Ni and special acid-resistant steels. Materials: M35 high speed steel with 5% cobalt. Durable and strong for longer use. Drill bits suitable for drilling tough metals, including stainless steels, Cr-Ni and special acid-resistant steels. Heat resistant: high speed steel twist drill bits with cobalt should be used at 1,500 rpm or more for maximum efficiency. The straight shank provides a firm and precise hold, compatible with standard chucks and regular round collets. Twisted design and performance: precise