ITEM NAME:4*6*11*55mm 3 Flute HSS CNC End Mill Cutter Straight Shank Bit Extended OZ Features: High-density polished, lengthened, super hard, wear-resistant, high temperature. Mainly used in cutting and hook slots. Application materials: mold steel, cast iron, carbon steel, alloy steel, tool steel. Specification: 100% brand new Material: HSS Size:4*6*11*55mm.High-density polished, lengthened, super hard, wear-resistant, high temperature. Material: HSS. Size:4 6 11 55mm. Mainly used in cutting and hook slots.