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._x000D__x000D_Features_x000D__x000D_- Color: as shown in the pictures._x000D_- Material: durable hard metal and plastic._x000D_- and Professional Bike Cycle Crank Extractor Bottom Bracket Remover Removal Spanner Repair Tools Kit._x000D_- Includes one crank extractor, one bottom bracket remover and one 16mm spanner._x000D_- 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._x000D_- Suitable for any 20 teeth splined type bottom bracket - generally the type used for any bike with a suntour, shimano, truvativ chainset._x000D_- The Bottom Bracket Remover can be used with either a 24mm socket, wrench or an adjustable spanner._x000D_- Fit for any brand type bottom bracket._x000D_- Small and handy for any bike owner to keep in the toolbox._x000D_- Simple to use, suitable for beginners.Packing list:3 * Bike Crank Extractor Puller_x000D_3 * Bike Bottom Bracket Remover Removal Tool_x000D_3 * 16mm Spanner