SRAM&';s X-Sync Road Chainrings are designed for provide maximum control when used with AXS road cranksets 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 gear Can be installed with a single tool, making gearing changes a breeze Chainring bolts not included Ring Position/Type: Chain Retaining Single Ring Drivetrain Speeds: 12 Chainring BCD: 107 Material: Aluminum keyword search: AXS