SRAM X-Sync Road Direct Mount Chainrings for RED and Force drivetrains feature a wide-tooth, narrow-tooth design to provides maximum chain control.Features-SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control-Laser-etched chainring finish is more durable-X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gearItem Specifications-Defined Color:Gray-Direct Mount Type:Direct Mount SRAM-Drivetrain Speeds:12-Material:Aluminum-Ring Position/Type:Chain Retaining Single Ring-Round or Oval:Round-Tooth Count:46