Specifications: 6.3mm, 8.3mm 10.4mm, 12.4mm, 16.5mm, 20.5mm; Material: HSS 4241 Universal sized drill heads are compatible with common cordless screwdrivers and drills, including drill presses The 6-piece 90 ° milling set with 3 cutting edges is suitable for machining on metallic and non-metallic materials, such as carbon steel, sheet steel, iron, aluminum, insulation, PVC, wood panel (soft, hard), plastic etc. Milling with titanium coating is very sharp and is characterized by high concentricity and durability. With these high quality burrs, burrs are broken and removed without scratching. Specification: Technical data: three cutting edges. Angle: 90 degrees. Material: 4241 high speed steel (for 25HRC hardness, the following parts, such as carbon steel, thin iron plate, insulation board, PVC board, wood, etc.). Benefits: 1. Batch processing: the cone knife is a batch processing environment for the bevel tool; 2. The one-piece design: the chips produced in the process can be chamfered