The RUKO step drill is the ideal tool for sheet metal working. It's suitable for all standard industrial materials: nonferrous metal, special steel, thermoplastics, duroplastics as well as sheet metal up to 1/8" thickness. The two spiral flutes guarantee quiet running and high cutting performance. The chip flow is optimized, even long, non-breaking chips will be removed easily and it protects the cutting edges. The cone makes it easier to withdraw the tool from the material. With split point, Co5 cobalt alloy, ideal for high-alloyed chromium steel such as stainless and acid resistant steel.