SRAM Red AXS Direct-Mount 50/37t 2x12 speed Chainring Set, Polar Gray - SRAM RED AXS 2x12 direct mount chainring set for RED AXS cranks.Durable finishNew tooth profiles offer improved wearOne-piece construction for faster, smoother, more secure shiftingSRAM's X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear