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.