Prestacycle Bicycle Tool Bits - (20) Piece CRV Hex Bit Set QUALITY - Hardened S2 steel 1/4" bits. COMPATIBILITY - Fits Prestaratchet and Prestacycle TorqKeys 4Nm through 12Nm. HEX - 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm TORX - T6, T8, T10, T15, T20,T25, T31 QUALITY: Prestacycle isdedicated to putting new ideas and innovations in the hands of cyclists. As life-long cyclists, we understand its about riding and actually being on the ride. We make products to do the right job quicker, and give you more time in the saddle. Precision tools in over 20 unique sizes specific for bicycles Hardened steel bits are non-marring on titanium and alloy bolts Perfect for Prestaratchet and most torque wrenches Trim-able bit carrier for a custom tool-set to-go