| About this article.HSS4241 high speed steel step drill: 6 - 60 mm / 0.24 - 2.36 inch step drill spiral flute, 12 steps, nitrogen-coated.Durable Made from high speed steel, shank diameter: 13 mm; Drill head length 82mm.Spiral cutting flute: 135 point and double corrugation for self-centering and deburring, spiral groove helps remove chips when drilling.Use: Suitable for workpieces with a hardness of less than 25 mm, e.g. B. carbon steel, iron sheet, insulation panels, PVC panels, floorboards and wood thicknesses less than 5 mm.12-step steps: 6,10,15,20,25,30,35,40,45,50,55,60mm (12 steps).More product details. | |