Versatile Bicycle Bottom Bracket Tool for Various Bottom Bracket Sizes
Bottom bracket tool size: Approx.5.5 5.5 3cm. Requires: 1/2" ratio/torque key drive. 1 set of Bike Bottom Tool. It is for 12-slot 50.4mm OD and 16-slot 52.2mm OD bottom brackets. T47 bushing is relatively thin, and the cup tool is easy to move.