The 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. FEATURES: 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 Shimano 12-speed chains require the use of Wolf Tooth's Shimano 12-speed specific chainrings If using a 9-speed drivetrain, use a 10-speed chain, which will provide a tighter fit for better chain retention Not compatible with Shimano Asymmetric 110 BCD Cranks or Campagnolo CX10/11 cranks Made from 7075-T6 aluminum for long life Use of a clutch-style rear derailleur is recommended SPECS: Color: Black Material: Aluminum Tooth Count: 52 Ring Position/Type: Chain Retaining Single Ring Drivetrain Speeds: 9 , 10 , 11 , 12 Chainring BCD: 130