Intense study of chain and chainring wear patterns led to the radical tooth profile that lasts longer, runs quieter and further improves chain retention. Oval ring shape for riders that want to adjust the power profile of their pedal stroke. FEATURES: The only oval rings with X-Sync 2 tooth design SPECS: Round or Oval: Oval Material: Aluminum Chainline/Hub Compatibility: 141/148 Boost Hubs Direct Mount Type: Direct Mount SRAM Tooth Count: 32T Ring Position/Type: Chain Retaining Single Ring Drivetrain Speeds: 10 , 11 , 12 Offset: 3mm