ITEM NAME:Bicycle Tools 4 in 1 Pedal Drive Bottom Bracket Crank sprocket Puller Casse U2U8 Bicycle Tools 4 in 1 Pedal Drive Bottom Bracket Crank sprocket Puller Casse U2U8 A crank puller is an indispensable tool for the installation and removal of the inner or bottom bracket on the bike. In doing so, the crank puller is pulled into the crank and then the crank is pushed away from the bottom bracket with the screw belonging to the crank puller. This is much more professional and safer than with a screwdriver and water pump pliers to possibly damage the bottom bracket during disassembly. Although there are different types and cranks, this crankset is designed for every standard square crank as well as cranks. High quality Easy to handle Fit for wedged bottom bracket Suitable for 8, 9 and 10-speed cassettes. If you remove the flywheel, it can repair the wheel without going any damage. Color: Black, silver Material: metal Size: wrench length: 29 cm Bottom Bracket: The length of the square hole: approx. 13.3mm The diameter of the cylinder: ca.22mm Geared bottom bracket round bore inside diameter: ca.24mm Inside diameter which teeth: ca.24mm Outside diameter of the teeth: ca.32mm Crank puller size: 8 x 2 cm Chain length: 23cm Package contents: 1 x crank trekker 1 x trapas 1 x dental crown puller 1 x sprocket collector Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..In doing so, the crank puller is pulled into the crank and then the crank is pushed away from the bottom bracket with the screw belonging to the crank puller. A crank puller is an indispensable tool for the installation and removal of the inner or bottom bracket on the bike.