Park Tool Bottom Bracket Tool BBT-49.3

Fits 16-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 39-40 mm and a minor diameter (inside of notches) of 37.6 mm, including:

- Shimano XTR BB93
- Shimano Dura-Ace BB9000
- Token

Also fits chainring lockrings on Shimano STEPS square spindle e-bike systems including:
- E6000
- E6002
- E6050

Replacement for Shimano TL-FC38 tool