Description 7pcs HSS 3 18mm 5 56mm Countersink Drill Bit Woodworking ToolSpecification TypeThe corresponding bit size mm Chamfer size mm Length mm 5 1 8 3 18mm 9 5mm77mm6 9 64 3 58mm 9 5mm80mm7 5 32 3 97mm 9 5mm84mm8 11 64 4 37mm 9 5mm85mm9 3 16 4 76mm 9 5mm88mm10 13 64 5 15mm 9 5mm91mm12 7 32 5 56mm 9 5mm95mmFeatures Drill Sizes 1 8 inch 9 64 inch 5 32 inch 11 64 inch 3 16 inch 13 64 inch 7 32 inch Drilling length can be adjusted by loosening and tightening the set screw The hex design is easy to discharge the sawdust The head of the drill is high speed steel the black part is carbon steel Perfect for the bench drill hand drill etc Package Included 7 x Wood Drill1 x Hex Wrench More Details