The Wolf Tooth 110 BCD Asymmetric Chainrings are designed for use with Shimano GRX cranks. Chainrings feature Wolf Tooth's patented Drop-Stop design for the best wear life, chain retention, and mud clearance.Compatible with Shimano GRX cranksets including RX600 and RX810Drop-Stop chainrings are designed for use with 1x9, 1x10, 1x11 and 1x12 drivetrainsDrop-Stop FT is compatible with all 10-, 11-, and 12-speed chains (including SRAM Flattop 12-speed chains), with the exception of Shimano 12-speed chainsShimano 12-speed chains require the use of Wolf Tooth's Shimano 12-speed specific chainringsIf using a 9-speed drivetrain, use a 10-speed chain, which will provide a tighter fit for better chain retentionUse of a clutch-style rear derailleur is recommendedMade from 7075-T6 aluminum for long lifeItem SpecificationsChainring BCD110 Shimano AsymmetricColorBlackDefined ColorBlackDrivetrain Speeds10Drivetrain Speeds11Drivetrain Speeds12Drivetrain Speeds9Ring Position/TypeChain Retaining Single RingTooth Count40 Wolf Tooth 110 Asymmetrical BCD Chainrings for Shimano GRX Chainring UPC: 810006801682