High-quality material Made of high-quality steel with a scratch-resistant black coating and a sturdy, comfortable plastic handle. This complete set is used to remove or replace hexagonal-type crank arms. Its hexagonal shape allows for optimal grip when used with a wrench. Compatibility The bicycle crank remover tool is compatible with any 20-tooth splined crankset, typically the type used for any bike with a Shimano, Suntour, SRAM, BSA, Truvativ, Wheels MFG, VGEBY1, etc. crankset. Set Includes A complete set of bicycle crank repair tools including 1 x 14mm crank extractor, 1 x 20-tooth bottom bracket extractor, a box wrench that can be either with a 16mm socket wrench or an adjustable wrench, and 1 x 16mm collet. A must-have tool set for any bicycle, mountain bike, or road bike enthusiast. Whether you ride professionally or just for your hobby, this is one of the main tools you'll need as a cyclist.