SRAM's X-Sync Road Chainrings are designed for provide maximum control when used with AXS road cranksets. FEATURES : 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 SPECS : Material: Aluminum Tooth Count: 42 Ring Position/Type: Chain Retaining Single Ring Drivetrain Speeds: 12 Chainring BCD: 107