Bottom bracket bearings BB30 B5 30 x 42 x 7 mm (x20)

Bearings BLACK BEARING B3Bearings High-end bearings for sportsThe bearings BLACK BEARING B3 are steel ball bearings, they are mounted by the vast majority of manufacturers of cycles (frames, wheels, pedals ...), urban sports (Roller, scooters, Skate, BMX ...), motorcycle, quad, modelism....The bearings of the B3 range are manufactured in the largest factories, they have been selected for their reliability, performance and value for money. A replacement bearing compatible with your original bearings.Technical Features:- High quality steel- 2RS seals, water and dust tight,- Quality grease.- Quality balls.