A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 16-notch tool fittings, including Shimano® XTR® BB93, Dura-Ace® BB9000, and Token® bottom bracketsThe BBT-49.3 features integrated threads for full compatibility with the Park Tool BBT-RS Bottom Bracket Tool Retaining System (sold separately)Replacement for Shimano TL-FC38 tool3/8` drive fittingExternal BB SocketBlack16 Notch39-40mmBBT-49.33/8`UPC/EAN/GTIN: 763477001610