Chromoly stainless steel lockring.
Now with high-polished finish!
Left-hand threaded. To hold a track cog onto a track hub.
ISO/English standard size 1.29" x 24 TPI fits most U.S., English, and Asian fixed gear hubs.
Does NOT fit Phil Wood hubs, nor does it fit most Italian-made or French-made hubs.
For sprockets 13 teeth and larger.
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