Middle shaft length: 123mm. Bottom bracket: 68mm. Lock ring material: aluminum alloy. Weight: 276.5g.
Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge 68 × 123mm
Shimano BB-UN300 Bracket Square Taper Sealed Cartridge 68 × 117.5mm MTB Bicycle
Shimano BB-UN300 Bottom Bracket Square Taper Sealed Cartridge (68 × 117.5mm) NEW
Shimano UN300 Bottom Bracket Square Taper Sealed Cartridge 68 x 127.5mm
