Park Tool BBT-59.3 External Bottom Bracket Socket - CNC Aluminum, Fits Shimano Ultegra & Deore XT Type_Bolt-On and efficient pedal work

and efficient pedal work

Designed with the angler in mind

making it a versatile upgrade for riders seeking to improve their setup

Features a standard 14mm axle diameter compatible with a wide range of mountain bike and BMX frames

The smooth anodized finish not only enhances corrosion resistance but also provides a sleek

Park Tool BBT-59.3 External Bottom Bracket Socket - CNC Aluminum, Fits Shimano Ultegra & Deore XT Type_Bolt-On and efficient pedal workA precision CNC machined aluminum tool for the installation and removal of select threaded bottom brackets with 16 notch tool fittings . Fits 16 notch bottom bracket tool fittings with a major diameter of 41 42mm and a minor diameter of 39mm . 3 8" drive compatibility Fits 16 notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 4142 mm and a minor diameter (inside of notches) of 39 mm Fits Shimano Ultegra BBR60,