Race Face's new Direct Mount 12 Speed Shimano chainring. Designed and machined in their Vancouver, BC facility, tested on the North Shore and in the Whistler Bike Park.SPECIFICATIONBuilt for: XC / Trail.Measurements: 30, 32, 34 teeth.Compatible with 12-speed Shimano transmissions.Compatible with RF cranks with CINCH System Interface.Cinch Direct Mount.Weight:57g (30t).65g (32t).73g (34t).