Shimano chainring for use with GRX FC-RX600 cranks. FEATURES: Front chainring for use with 1x 11-speed GRX FC-RX600-1 crankset 110mm BCD Asymmetric Crafted with high strength, light weight aluminum SPECS: Material: Aluminum Round or Oval: Round Color: Black Tooth Count: 40 Ring Position/Type: Chain Retaining Single Ring Drivetrain Speeds: 11 Chainring BCD: 110 Shimano Asymmetric