Durable carbon steel material] takedown crank is made of high quality carbon steel material with chrome surface and high hardness. It does not damage the crank thread and can be used for a long time. The surface of the compact crank puller is coated with a layer of protective oil to improve resistance to oxidation and rust. [Professional Universal Crank Puller] the thread of the crank The bicycle crank puller is mechanically processed, fine and even, no jamming when using, more smooth, it is not easy to damage your crank thread. [standard size ] each bike crankset measures approximately 8 x 2.4 x 2cm / 3.15 x 0.94 x 0.79inch. It is compact, lightweight and takes up little space for easy storage and carrying. [Convenient to use] This bicycle crank crank remover is used to separate the crank from the bottom of the bicycle. The bicycle crank puller disassembly tool has a removable cover with a dual function that allows the pulley to be attached to an oversized chuck. All you need is an active key that can be installed and used. [Versatile] Rally crank bike is suitable for disassembling and assembling chain cranks. The removable head allows the maintenance of all tapered bicycle housings. The crank tractor is an indispensable tool for household bicycles and outdoor bicycles.