The item is a professional and practical bike repair tools kit, which includes one crank extractor, one bottom bracket remover and one 16mm spanner, and is mainly made of high-grade hard metal material for durable to use. The crank extractor is used to remove square type crank arms, all you need is either a 5/8 or 16mm spanner or just an adjustable spanner, and the bottom bracket remover can be used with either a 24mm socket, wrench or an adjsutable spanner. Features - ColorAssorted Color - Material: durable hard metal and plastic. - and Professional Bike Cycle Crank Extractor Bottom Bracket Remover Removal Spanner Repair Tools Kit. - Includes one crank extractor, one bottom bracket remover and one 16mm spanner. - The Crank Extractor is used to remove square type crank arms, all you need is either a 5/8 or 16mm spanner or just an adjustable spanner. Suitable for Standard Square Tapers. - Suitable for any 20 teeth splined type bottom bracket - generally the type used for any bike with a , , chainset. - The Bottom Bracket Remover can be used with either a 24mm socket, wrench or an adjustable spanner. - Fit for any brand type bottom bracket. - Small and handy for any bike owner to keep in the toolbox. - Simple to use, suitable for beginners. Package list: 3 * Bike Crank Extractor Puller 3 * Bike Bottom Bracket Remover Removal Tool 3 * 16mm Spanner