- High quality construction with double seals.
- Sold separately.
- 7mm width for use on the non drive side, or 14mm double width for the drive side.
- 21mm bore and 31mm external diameter.
- May fit other BBs, please ask if you are unsure.
KMC Z510, 1/8"
Hope Trial Zone Caliper
Try-All XXL 30mm Wide
Jitsie Track Pump