Shimano BB-UN300 Bottom Bracket - English 68 x 122.5mm Spindle Square Taper JIS

Shimano BB-UN300 Square Spindle Bottom Brackets Fits JIS square-taper cranksets Crankarm fixing bolts sold separately Hollow spindle 50mm chainline Spindle Interface Type: Square Taper JIS BB Shell Width (mm): 68 Bottom Bracket Shell I.D.: 1.37 Spindle Length: 122.5 BB/Frame Interface: English Defined Color: Black