Screwing, drilling accessories -Cutter grinder Highlights generic brand Cutter grinder Description: Cut metal, wood and plastic quickly and easily. HSS cutters for steel and hard metals. Smooth and durable surface. Ideal for driving 90 degree holes in wood and plastic countersunk screws and fasteners. Size: 10mm 12mm 16mm Specification: Material: HSS Size: approx. 10mm/0.39inch; 12mm/0.47inch, 16mm/0.63inch Shank Diameter: Approx. 8mm / 0.31inch Total Length: Approx. 38mm / 1.50 inch; 40mm / 1.57inch; 42mm / 1.65inch Color: silver Package Include: 6 Pieces Chamfer Drill Bits (each size 2 pieces) Note: Due to the light and screen setting difference, the item's color may be slightly different from the picture. images. Please allow slight dimension difference due to different manual measurement.