Features:_x000D_10 MM SHAFT - Thanks to the specially manufactured shaft, our HSS step drill fits into all cordless screwdrivers and drills._x000D_DRILLING WITHOUT DANCING - The self-centering tip precise cutting of the tapered drill cut itself into the material without getting lost. The straight flutes offer optimal chip ejection_x000D_PLEASE NOTE: As a plastic drill or sheet metal drill: Drill clean holes in sheets made of steel, aluminum, brass and copper. Also great for wood and plastics. Not for stainless steel_x000D_WITHOUT DRILL REPLACEMENT - pre-drilling, boring and deburring in one step. The hole drill offers extreme ease of work. Perfect for cable routing, bodywork, rain barrel, wooden panels etc._x000D_Specification:_x000D_Size of each step: 5mm, 7mm, 10mm, 12mm, 15mm, 17mm, 20mm, 22mm, 25mm, 27mm, 30mm, 32mm, 35mm_x000D_Handle thickness: 10mm_x000D_Material: HSS4241_x000D_Purpose: Suitable for opening and reaming steel plates, sheet metal, aluminum alloy, and plastic plates with a thickness of less than 3mm.Package List:_x000D_1x Step Drill