Shimano BB UN300 bottom bracket British thread, 68 127.5 mm, Silver

Blacks

A good quality bottom bracket for traditional chainsetsSuper-accurate bearings for smooth operation and improved durabilityDurable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fittingMaintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing lifeFast and easy installation without adjustmentNarrow body allows clearance for cable routing under the bottom bracket

Amazon

Country of origin: Singapore Shimano Unisex's BBUN300B27 Wheels, Silver, 68-127.5 mm Square Taper, BSA