Shimano, Square Taper BB, British, 68mm, :118mm, w/o fixing bolt, Silver

Tech Specs:

• 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 bolts not included; Shimano FC-E6000 bolts suggested
• BB Shell Thread - British
• BB Shell Width - 68mm
• BB Bearing - Steel
• Interface - Square
• Primary Color - Silver
• Spindle Length - 118mm