Higher feed especially in NE metals possible due to the slim cutting edge. STEP DRILL HSS HOLE CUTTER 4MM - 42MM (20506 HSS Hole Cutter HSS Stepped Hole Cutter, 7-40,5mm, 13 Steps Stepped Hole Cutter 7-40.5mm Ceramic surface, reducing friction by up to 30%; Especially resistant to cold welding; Suitable for cutting a wide range of materials. Sizes: 7, 10.5, 12.5... Cutting edge has thinning point, Right hand cutting, Spiral grooved, 118° pointed angle, 90° stepped angle, Absolute smooth operation, High cutting achievement, Surface without discolouration, High performance steel KS TOOLS 330.2384 - 1/4" HSS TIN stepped hole cutter | Mister Worker Point thinning according to DIN 1412 C
