Shimano UN55 68 x 113 Square Taper
CARTIDGE BOTTOM BRACKET
Original Shimano parts guarantees that all components work perfectly for optimum performance and maximum safety and longevity.
If you are not sure which size you need then
Measure from end to end of the axle - this one is 113mm
Square tapered ends for the cranks to fit on to
68mm is the width of you bike frame where the Bottom Bracket fits into