Shimano BB-UN300 Square Spindle 68mm Bottom Brackets
Features:
- Fits JIS square-taper cranksets
- Crankarm fixing bolts sold separately
- Hollow spindle
Specifications:
- Frame Interface: BSA/English Threaded
- Spindle Interface: Square Taper JIS
- Bottom Bracket Shell ID: 1.37
- Shell Width: 68mm
