Shimano, BB-UN300 LL113, Square Taper BB, British, 68mm, : 113mm, Silver

Simple and reliable square taper bottom bracket
Replaces both BB-UN26 and BB-UN55
Sealed cartridge bearings
Cr-Mo axle
For bicycles equipped with a chain case, select BB-UN300-K
For E-type front derailleur compatibility, choose BB-UN300-E
Fixing bol