Workshop BB Tools with guide and handles for fitting and removal of various bottom brackets.Install or remove the bottom bracket without slipping off or damaging the splines of bearing shell.* CYT7616 - 720208 - 8590831432573 - Workshop BB Tool Campagnolo Ultra-Torque* CYT7617 - 720204 - 8590831432504 - Workshop BB Tool Campagnolo Mirage, FAG, Kinex, Ofmega, KSS-Norm* CYT7618 - 720201 - 8590831432511 - Shimano 20t cartridge BB-UN 51/71/72, Kinex* CYT7619 - 720202 - 8590831432542 - Shimano BB-Octalink 7700 / 6500 / 5500* CYT7621 - 720207 - 8590831432566 - Shimano Hollowtech 2 type* CYT7631 - 720200 - 8590831432900 - 3/8" 28mm socket adapter for bottom bracket mounting tools. For mounting tools Art. No. 720201/ 720202/ 720204/ 720207Use:* Place the mounting tool into the spline socket of the bottom bracket and turn the spring-loaded insert into the crank mounting bolt hole to secure the tool.* Now you can install or remove the bottom bracket without slipping off or damaging the splines of bearing shell.Tip: When mounting the bottom bearing cartridge, first ensure the frame shell threads are clean and greased.Pay attention to the frame material and bottom bracket torque values specified by the manufacturers.