Shimano Ultegra BB72, BBR60 Hollowtech II Bottom Brackets

FEATURES:

• Reduced size for light weight
• New seal construction for smoother rotation
• Requires TL-FC34 or included TL-FC24 adaptor for installation & removal

SPECS:

• Spindle Interface Type:Shimano Hollowtech II
• BB Shell Width (mm):68
• Bottom Bracket Shell I.D.:1.37
• BB/Frame Interface:English
• Weight:77