Built to outlast, this hard-wearing and corrosion resistant steel direct mount ring has a lifespan that is measured in years not months. Features: Narrow Wide tooth profiling ensures ultimate chain retention. Attaches as part of the RF Cinch system (using common Park BBT-22 bottom bracket tool) - allowing to switch between DM rings/spiders with ease. Hard-wearing steel with a corrosion inhibiting coating. Offers indentical chainlines to existing aluminum chainrings and can be flipped . Compatible for 9, 10, 11 and 12 speed*. Specifications: Colour: Black. Built For: XC / Trail / AM / DH. Weight: 158g (32T), 146g (30T), 135g (28T). Compatible With: Race Face cranks with CINCH System Interface. Size: 32T, 30T, 28T. *Please note: Not compatible with with Shimano 12 speed chains.