BBT-59.3 Bottom Bracket Tool 16-Notch Shimano Di2 5 hrs Constant / 10

5 hrs Constant / 10 hrs Blinking

As both rubber and sponge are flexible and highly resilient

Prevents over tightening and damage to lightweight components

ULTEGRA 6700 Series

BBT-59.3 Bottom Bracket Tool 16-Notch Shimano Di2 5 hrs Constant / 10A precision CNC machined aluminum tool for the installation and removal of select threaded bottom brackets with 16 notch tool fittings, including Shimano Ultegra BBR60 and Deore XT MT 800 bottom brackets. Manufactured in house by Park Tool, anodized for easy identification and featuring a ratchet torque wrench compatible 3 8" drive. Fits 16 notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 4142 mm and a minor