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).Key Features:10T.,RollerBoys equipped with low friction ceramic bearings for ultra-smooth glide and exceptional durability.,Special teeth pattern for quick shifting performance.,Lubricated with special ceramic light oil for extra smoothness.,Composite material provided by EMS Swiss, with 40% glass-fiber mixture.,Complete set of bushings for different shifting systems included.,Bearing type: Ceramic.,Compatible with: Shimano, Campagnolo, SRAM.,Made of: Grivory EMS., .