Perfect Bike Trip Why Choose Our Bike Tool Kit? Owning a right bicycle tool kit will make you have no worries during the cycling. Given that, THYWD 5 IN 1 BIKE TOOL is designed to solve this problems. You can count on our cycling tool set to provide you with a convenient, fast and simple way to check the condition of your Crankset, bottom bracket, freewheel, chain and repair it with easy. Chain Breaker Double driving pin for easy chain breaking. Comfortable handle design, firm and durable. Specifically designed to remove and install chain pins. Suitable for all common bicycle chain 6/7/8, 9, 10 speed chains of mountain bike, road bike, folding bike etc. Material: high quality carbon steel Dimensions: 8 * 7 * 6 cm Crank Puller Extended ejector, can be removed the square tapered teeth mouth side plate and crank.Thousand-ton forging and quenching and hardening treatment are used, CNC tapping is more precise and does not damage the teeth. Suitable for square tapered cranksets. Material: high quality carbon steel Dimensions: 8 * 1.9 cm Bottom Bracket Removal tool Bike Bottom Bracket Remover can be used with either a 24mm socket, wrench or an adjustable spanner Compatible with any 20-tooth cartridge type bottom bracket. Material: high quality carbon steel Inner diameter: 24 mm outer diameter: 32 mm Freewheel Removal tool Professional and pratical bike bicycle freewheel remover tool. Thin wall construction allows use without removal of cones and locknuts. Fits for Shimano, Sachs Aris, and Sun Race freewheels. Material: heat treated alloy tool steel Inner diameter: 20 mm outer diameter: 23.4 mm, with 12 teeth