Features:- Made of high quality steel and processed with hardened heat treatment, high strength, anti-rust and durable.- Handy tool for repairing bike bottom bracket to install, loosen or tighten it.- Mini and lightweight, easy to carry and use.- Compatible with any 20 teeth square hole bottom bracket, suitable for SHIMANO, FSA, VP, LP.- Necessary repair tool for bike lovers. Specification:Material: SteelColor: as shown in the picturesLength: Approx. 4.8cm / 1.9inchInner Thread Diameter: Approx. 13.4mm / 0.53inchWeight: Approx. 113gAppliable to 20 teeth square hole bottom bracketSuitable for SHIMANO, FSA, VP, LP Package Included:1 * Bottom Bracket Tool