Featuring the proprietary mud clearing Drop-Stop tooth design, these rings are designed to fit any 104 BCD crankset. Made in Minneapolis, MN with exceptional chain retention in mind, these chainrings are best paired with a clutch-style rear derailleur. Drop-Stop chainrings are designed for use with 1x9, 1x10, 1x11 and 1x12 drivetrains. Compatible with all 10-, 11-, and 12-speed chains, with the exception of 12-speed chains. 12-speed chains require the use of Wolf Tooth's 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. Use of a clutch-style rear derailleur is recommended. Made from 7075-T6 aluminum for long life. Item Specifications: Color: Black, Ring Position/Type: Chain Retaining Single Ring, Tooth Count: 34, Round or Oval: Round, Drivetrain Speeds: 9, Drivetrain Speeds: 10, Drivetrain Speeds: 11, Drivetrain Speeds: 12, Chainring BCD: 104, Material: Aluminum, Defined Color: Black, keyword search: T-Type, keyword search: Transmission,