Park Tool BBT903 BB90 Bearing Tool

Park Tool BBT903 BB90 Bearing Tool The Park Tool BBT903 BB90 Bearing Tool works similar to a small head cup remover to safely extract low profile bearings from inside the bottom bracket shell; as the tool slides through the shell it expands behind the bearing; once the tool is in place; the bearing is removed by tapping on the top cap with a hammer. The BBT-90.3 set also includes installation cups to be used in conjunction with the Park Tool HHP-1; 2 or 3 Headset Cup Press to quickly and precisely press the bearings into the bottom bracket shell.