BLACK BEARING Bearing B5 25X37X10MM UB-63805-B5 beta-rr-50-2025-esi5177182 Utilize the phone's touch screen

Utilize the phone's touch screen through protective window

Zippered volume expansion

Protects seals and extends time between rebuilds

Able To Shed Mud But Also Roll Smoothly On Hardpack And Sloppy Terrain

Special rubber compound is constructed of an extended-wear formula for incredibly long tread life

BLACK BEARING Bearing B5 25X37X10MM UB-63805-B5 beta-rr-50-2025-esi5177182 Utilize the phone's touch screenEspecially for cycling, this range with a high quality is perfect to resist to the most extreme circumstances. Each component (balls, rings, cages and grease) is manufactured and assembled with precision. A Black Bearing B5 bearing is synonym of reliability, fluidity and durability. It is the most sold bearing of the range and 100% compatible to replace the original bearings. Chrome steel balls SAE52100 abec 5. Steel rings SAE52100 with optimized