Bike Derailleur Cassette Removal Tool Contents: 1 x chain whip, 1 x crank puller, 1 x crank puller, 1 x sprocket puller. High quality steel construction, rust protected and durable. Essential tool for fitting and removing the crankset or bottom bracket bearing on the bike. The 5 tools fulfill their function perfectly. Crank extractor One end can be used to remove the square-hole crankset; one end can be used to remove the bolt from the old bottom bracket bearing. You must bring your own 58 or 16mm wrench or just use an adjustable wrench. Suitable for ordinary square cranksets. 3 in 1 sprocket wrench with chain - Made of high quality steel, with a weight of approximately 210g. It is mainly used for assembly and disassembly of the drive shaft integrated with thread. If you disassemble the freewheel, block it so that it does not turn. Remove the old spline shaft, assemble and disassemble the single-stage freewheel. Sprocket puller It is made of carbon steel with the surface treated against rust. It has a long lifespan and is easy to use. It is used to remove or fit a sprocket cassette freewheel. (Note: Use the sub tool with your adjustable wrench. This product does not come with an adjustable wrench). Crank Arm Puller Can be used to remove the crank from the bike and perform daily maintenance on the bike without damaging the components. The crank arm puller can be used with a spanner or wrench. Suitable for cranksets of any brand.