Shimano Bicycle Bottom Bracket BB-UN55 73 mm

Sealed cartridge bottom bracket suitable for a road or mountain bike
A good quality bottom bracket for traditional chainsets
Super-accurate bearings for smooth operation and improved durability
Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life
Fast and easy installation without adjustment
Durable, hard-wearing sealed cartridge bottom bracket with Cromo SQUARE TAPER Axle
Axle Length 110mm, 118mm or122.5mm
English Thread BC 1.37 x 24
73mm Shell
Weight: approx. 300g