FSA Super Road Chainrings are designed to provide flawless shifting, with minimal weight and unmatched durability. Precision CNC machined AL7075/T6 alloy. N-11 chainrings are compatible with all 10 speed drivetrains, and compatible with FSA, SRAM and 11 speed drivetrains. N-10 chainrings are compatible with , SRAM and Campagnolo Ultra Narrow 10-Speed drive trains. S9/C10 chainrings are compatible with 9 speed and Campagnolo C10 10-Speed. Compatible with all 10 speed drivetrains; compatible with and SRAM 11 speed drivetrains.