Tool Park Tool BBT-69.4 Bottom Bracket 16-Notch Blue The right tool for the job Quality tools for professionals and the home mechanic. A precision CNC-machined aluminum tool for the installation and removal of select components with 16-notch tool fittings, including bottom brackets, center lock disc brakes, and e-bike motor lockrings. The BBT-69.4 features integrated threads for full compatibility with the Park Tool BBT-RS Bottom Bracket Tool Retaining System (sold separately). Key Features Fits 16-notch tool fittings with a major diameter (outside of notches) of 44–45 mm and a minor diameter (inside of notches) of 42.7 mm Fits Shimano® BB80, BB5700, XT® BB70, BB51, and previous external bearing threaded bottom bracket cups Fits threaded bottom bracket cups from Campagnolo®, Chris King®, FSA® MegaExo®, Hope™, SRAM®/Truvativ® GXP®, Race Face® X-type, Surly®, Wheels®, Fulcrum®, and others Fits center lock disc brake rotor lockrings Fits Bafang BBSH, BBS02 mid-drive motor lockrings 3/8" drive fitting Specifications Part Number 5309271 Color Blue Size One size Model Year 2026 Material Components Aluminum