Ceramic bottom bracket
Color: black,
Material: 6061 Aluminum alloy+ Ceramic bearings
Compatible with 24mm external type cranksets
(Shimano, FSA, Hollowtech II, RaceFace X-Type series)
Thread : BC 1.37" x 24T English Thread
BB shell width compatibility: 68mm,73mm
Outside diameter: 41 (+0.05,-0) mm
Inner diameter : 24mm
weight: 120
Packing: 1pc/hyaline box
Features: Smooth, Especially ceramics bearings axis, Greatly improved abrasion resistance Not easy to rust ),
Its lubricating, Let you Easier to play in riding competitions, More effort