CRV steel bits are the same material and strength as major U.S. Brand Hex tools. Covers all major HEX sizes and all the new TORX® sizes found on the latest components. Also perfect for most brands of torque wrenches with the optional adapter. Includes: HEX: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm TORX®: T6, T8, T10, T15, T20,T25, T30 SCREWDRIVERS: PH0, PH1, PH2 1/8 flat, 3/16 flat & 1/4 socket adapter.