Cassette lockring tool Park Tool BBT-59.3 07001322

Precision CNC-machined aluminum tool for installing and removing bottom bracket cassettes (bottom bracket) with threading, featuring 16-tooth Shimano® Ultegra® BBR60 and Deore XT® MT-800 fittings. Manufactured by Park Tool, anodized with a 3/8" drive for ratchet/torque wrench.
The BBT-59.3 includes integrated threads for full compatibility with the Park Tool BBT-RS bottom bracket tool holder system (sold separately). The BBT-RS uses an adjustable spring-based clamping system to apply consistent, adjustable pressure on the tool, ensuring full engagement with the tool fitting and preventing slipping.

Fits bottom bracket cassettes with 16 teeth, with a major diameter (outside the splines) of 41–42 mm and an internal diameter (inside the splines) of 39 mm, including:
-Shimano® Ultegra® BBR60
-Shimano® Deore XT® MT-800