Wolf Tooth Shimano 110 Asymmetric BCD Chainring - 38t, 110 Asymmetric BCD, 4-Bolt, Drop-Stop B, For Shimano GRX Cranks,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 RX810 Drop Stop chainrings are designed for use with 1x9, 1x10, 1x11 and 1x12 drivetrains Drop Stop FT is compatible with all 10 , 11 , and 12 speed chains (including SRAM Flattop 12 speed