This durable titanium nitride coated drill bit set lasts six times longer than standard drill bits. 1/4hex shank is specifically designed for cordless screwdrivers, which can allow you to change bits quickly .HSS titanium coated bit set with standard 1/4hex shank that fits cordless screwdrivers, drills, etc . 1/4hex shank for quick drill changes. Mm / 0.06 , 2.0 mm / 0.08, 2.5 mm / 0.10 , 3 , 0mm / 0.12, 3.2mm / 0.13 , 3.5mm / 0.14, 4.0mm / 0.16 , 4.5mm0.18, 4.8 mm / 0.19, 5.0 mm / 0.20 , 5.5 mm / 0.22, 6.0 mm / 0.24 , 6.5 mm / 0.26.< br / 1882.Package includes: 1x 1.5mm HSS Drill + 1x 2.0mm HSS Drill + 1x 2.5mm HSS End Mill + 1x 3.0mm HSS End Mill + 1x 3.2mm HSS End Mill + 1x HSS cutter 3,2mm 3,5 mm + 1 HSS cutter 4,0 mm + 1x HSS cutter 4,5 mm + 1 HSS cutter 4,8 mm + 1 HSS cutter 5,0 mm + 1 HSS cutter 5,5 mm + 1 cutter HSS 6.0 mm + 1 cutter HSS 6.5 m m Suitable for wood, fiberboard and pellets. Board, plywood, plastic, aluminum, PCB, etc.