Prestacycle Professional 1/4" S2 Hex Bit Set Description: The Prestacycle Pro Hex Bit Set is made from hardened S2 steel and coated with nickel plating to provide years of use. Stronger and longer-lasting tools prevent damaging bolts while protecting components. The complete 18-piece 1/4" bit set covers all major sizes of hex, screwdrivers, and Torx found on the latest bike components. Features: (18) Precision hardened bits in two carriers Perfect for use with any Presta Rachet Professional bits made with hardened S2 steel Nickel-plated for a long lasting finish that prevents marring Resist rounded edges to protect bolts and components Includes: Patented Bits Carriers Hex bits: 2, 2.5, 3, 4, 5, 6, 8mm Torx bits: T8, T10, T15, T20, T25, T27, T30 Screwdriver bits: PH1, PH2 and 1/8, 3/16" flat