Retrogression cro-mo track lockring
CNC machined from hardened chromoly steel, our lockrings have a smooth black oxide coating and stepped design that prevents the chain from making unwanted contact with the lockring when using a 12t cog.
Of course, you can use this lockring with other size cogs too.
This will not fit Campagnolo, Miche, Phil Wood, Mack or Mavic hubs.
• standard 1.29"x24 tpi left-hand threads
• color: black