A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 12-notch tool fittings including SRAM BSA DUB Race Face Cinch Rotor BSA30 and others. Manufactured in-house by Park Tool anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8″ drive.The BBT-79.3 features integrated threads for full compatibility with the Park Tool BBT-RS Bottom Bracket Tool Retaining System (sold separately). The BBT-RS uses an adjustable spring-based tension system to apply consistent adjustable pressure to the tool ensuring full engagement with the tool fitting and preventing slippage.