Park Tool BBT-59 16 Notch 41mm Bottom Bracket Tool for 3/8" Driver - BBT-59
Park Tool BBT-59 16 Notch 41mm Bottom Bracket Tool for 3/8" Driver - BBT-59, Precision CNC machined aluminum tool for the installation and removal of 16-notch external bearing bottom brackets. Anodized for easy identification and featuring a ratchet/torque wrench compatible 3/8" drive. Features: 41mm OD cup Fits Shimano(R) BBR60 (Ultegra(R) 11-speed 6800 series), Shimano(R) MT-800