Product details:

Race Face's Cinch Narrow/Wide V2 chainring is now sporting a smooth finish with an updated tooth profile. It's proprietary direct mount spline interface is designed to be used with any of Race Face's Cinch cranksets. The chainring attaches using a lockring that can be installed/removed with a Park BBT-22 bottom bracket tool (ISIS BB tool). The narrow/wide tooth profiling ensures ultimate chain retention with most 9, 10, 11, or 12 speed chains.Not compatible with Shimano Hyperglide+.Perfect Hold.
This chainring has an alternating narrow-wide teeth configuration for unbeatable chain retention no matter how bumpy things get on trail.
Torque it Real Good.
Manufactured from forged 7075-T6 alloy, this tough chainring can stand up to anything your jacked quads can throw at them.
Power To The Pedal.