Park Tool socket bit sets are precision-engineered tools designed specifically for bicycle maintenance and repair. Known for their durability and professional-grade quality, these sets are widely used by home mechanics, bike shops, and cycling enthusiasts who need reliable, repeatable performance when working on modern bicycles. Hex bits: 3, 4, 5, 6, 8, 10, 14, and 16mm Long reach hex bits: 5, 6, 8, 10, 11, 12, and 15mm Long reach Torx -compatible bits: T20, T25, T30, T40 and T45 Hex sockets: 8, 9, 10, 11, 12, 13, 14, 15, 17, and 19mm 1" socket: fits many Park Tool freewheel, cassette lockring, and bottom bracket tools including FR-1.3, FR-5.2, and BBT-22 Flat sockets for suspension fork fittings: 24, 26, 27, 28, 30, 32mm (27mm socket has external taper for narrow access fittings) Foam tray measures 15.75" x 9" (400 x 230 mm) and is 1.75" (45 mm) tall with bits and sockets installed Not designed for use with impact drivers or other power tools All Sockets and Bits are 3/8" drive Park Tool SBS Socket and Bit Sets Ratchets & Bits UPC: 763477009371