Shimano Dura-Ace Track Cog Lockring
The Dura-Ace lockring features left handed threads and is intended to hold a standard track/fixed gear cog onto a standard track/fixed gear hub. Made from hardened CroMoly steel with rolled threads, the quality and durability of this product lives up to the Dura-Ace name. If your looking for the industries best track lockring, look no further.
Please Note: Will not fit Phil Wood, most Italian or French made hubs.