True value and performance are found in these FSA road chainrings. They offer both long wear life and smooth shifting. FEATURES : Stamped AL7075/T6 N11 chainrings are compatible with all 10 speed drivetrains, and compatible with FSA, SRAM and Shimano 11 speed drivetrains SPECS : Color: Black Material: Steel Tooth Count: 30 Ring Position/Type: Inner Drivetrain Speeds: 11 , 10 Chainring BCD: 90