ACS threaded freewheels that are focused on durability for metric thread applications. 

• Cold forged for high-torque strength, and increased durability
• 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
• Removable with Crossfire 6-spline tool
• Threaded Metric 30 x 1mm Cassette Body
• Weight 113.4g (approx)