FOUNDATION SHIMANO CARTRIDGE BOTTOM BRACKET TOOLLike most parts on a bicycle, bottom brackets wear out, eventually. Most bottom brackets require a special tool for removal, depending on the type. The Foundation Shimano cartridge bottom bracket tool is designed to work with Shimano and ISIS Drive splined 20-tooth bottom bracket cups. It features a long handle with a grip that provides ample leverage for easy bottom bracket removal. This tool alsoworks with Race Face Cinch crank lock rings. Features Long handle with grip provides ample leverage Fits: Shimano and ISIS Drive 20-tooth bottom brackets and Race Face Cinch crank lock rings | Foundation | Shimano Cartridge Bb Wrench Black