– CNC machined aluminum ring fits Race Face cranks with Cinch System
– Features Drop-Stop tooth design to prevent unwanted chain drop
– Asymmetrical tooth shape for the best wear life, chain retention and mud clearance
– Drop-Stop B is compatible with 10/11/SRAM 12sp chain and Flat Top/Transmission chains. Not compatible with Shimano 12 speed
– Made in the USA from 7075-T6 aluminum alloy