The BBT-30.4 is designed to install and remove the bearings and bearing cups used in most bottom bracket systems that feature a 30 mm spindle, including many BB30 and PF30 systems. The included BB30 bearing remover installs through the shell to easily drive out bearings. Features extra length to work with wider fat bike bottom bracket shells.The BBT-30.4 also includes a set of bushings that can be used in conjunction with a cup press (such as the HHP-2 or HHP-3 sold separately) to quickly and precisely press new bearings into the bottom bracket shell.