bbb rollerboys 10t jockey wheels in black

Composite material provided by EMS Swiss, with 40% glass-fiber Features: 10t Special teeth pattern for quick shifting performance Complete set of bushings for different shifting systems included Bearing type: Standard Compatible with: Shimano 7 and 8-speed; Campagnolo 8, 9 and 10 speed; SRAM 9.0(‘97/’98), 9.0SL(’98), 7.0(‘97/’98) and 5.0(‘98/’99) Made of: Grivory EMS