Park tool bottom bracket tool bbt 59.2easily remove and install bottom brackets with the bottom bracket tool from park tool. An ideal addition to your workshop, it connects your cups and bottom brackets without any hassle. Optimised for precision fittingmade from cnc machined aluminium for durability and strength, this bottom bracket bb tool has updated tooth profiles for the most accurate fit to your high performance bottom bracket parts. Easy to rotate by hand, you can tighten or loosen cups further with your ratchet or torque wrench attached to the tool's 3 8 drive, allowing you that often required extra leverage. Laser engraved and anodised for easy identification, and compatible with 41mm, 16 notch bottom brackets and shimano bbr60 ultegra 11 speed 6800 series and mt 800 models, the bottom bracket tool bbt 59.2 is a workshop essential from park tool.features material cnc machined aluminiumfit size 16 notch 41mm cupscompatibility shimano bbr60 ultegra 11 speed 6800 series, mt 800 model bottom brackets and similarly sized bracketsbuy park tool accessories from chain reaction cycles, the world's largest online bike store.