Surly track lockring
Machined from 5mm thick stainless steel and featuring a 0.65mm Inside lip for maximum thread contact (and by "inside lip", we mean that side faces the inside, toward your cog).
For use with cogs 13t and larger.
This will not fit Campagnolo, Miche, Phil Wood, Mack or Mavic hubs.
• standard 1.29"x24 tpi left-hand threads
• color: silver/stainless steel