ACS threaded freewheels that are focused on durability for metric thread applications. Features-Removable with Crossfire 6-spline tool-Three-pawl design provides engagement every 12 degrees (30 steps total)-Nickel plated sprocket ring fits 1/8” and 3/32” chains-Fits metric M30 x 1mm hub threads-Cold forged for high-torque strength, and increased durability Item Specifications-Color:Silver-Weight:113.4-Cassette Body Type:Threaded Metric 30 x 1mm-Freewheel Teeth:14-Chain Compatibility:3/32"