1Made of high quality steel and processed with hardened heat treatment, high strength, anti-rust and durable 2Handy tool for repairing bike bottom bracket to install, loosen or tighten it 3Mini and lightweight, easy to carry and use 4Compatible with any 20 teeth square hole bottom bracket, suitable for SHIMANO, FSA, VP, LP 5Necessary repair tool for bike lovers 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: Steel Color: as shown in the pictures Length: Approx. 4.8cm / 1.9inch Inner Thread Diameter: Approx. 13.4mm / 0.53inch Weight: Approx. 113g Appliable to 20 teeth square hole bottom bracket Suitable for SHIMANO, FSA, VP, LP Package Included: 1 x Bottom Bracket Tool