Designed for racing, and for those looking to optimize each detail in pursuit of speed, Wolf Tooth Aero Chainrings are strong, lightweight, and profiled to mate perfectly with your crankset for a clean, integrated look. Taking advantage of 1x drivetrain systems and wider-range rear cassettes, Aero Chainrings provide similar overall range to standard 2x drivetrain configurations. They feature Wolf Tooth's patented Drop-Stop design for the best wear life, chain retention, and mud clearance. Drop-Stop ST is specifically for the Shimano 12-speed Hyperglide+ chain, which is used by GRX 800 12-speed.Compatible with Shimano GRX 800 series cranksetsDrop-Stop ST is designed for Shimano Hyperglide+ and KMC 12-speed chains onlyWolf Tooth s patented Drop-Stop wide/narrow tooth profile provides the ultimate chain retention and mud-shedding abilityIntended for 50mm chainlines (Same as Shimano GRX 800 series chainrings)CNC machined with premium 7075-T6 aluminum for exceptional strength and weight savingsManufactured in Minnesota USAItem SpecificationsChainring BCD110 Shimano AsymmetricColorBlackDefined ColorBlackDrivetrain Speeds12MaterialAluminumRing Position/TypeChain Retaining Single RingRound or OvalRoundTooth Count48 Wolf Tooth 110 Asymmetrical BCD Aero Chainrings for 12-Speed Shimano GRX 800 Series Chainring UPC: 810006809169