Wolf Tooth 130 BCD Road and Cyclocross Chainring - 52t, 130 BCD, 5-Bolt, Drop-Stop, 10/11/12-Speed Eagle and Flattop Compatible, BlackThe perfect 1x solution for your gravel, CX or road bike. Made from 7075 Aluminum, Wolf Tooth's patented Drop Stop design helps clear mud while retaining your chain. Product Details: 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 chains), with the exception of Shimano 12 speed chains If using a 9 speed drivetrain, use