Soma Track Cog 1/8 Inch - Chrome

Sorry, just adding to my previous question that I'm interested in the larger sizes which have the recessed area around the lockring face, which might make a difference.

I've got an old track hub with fairly minimal lockring threading and have heard these cogs might be slightly narrower between the shoulder and lockring face (6.9mm vs the more common 7.5ish), which would allow an extra half turn of lockring thread engagement (sounds like nothing, but is an extra 20-25% peace of mind).

Just wondering if there's any way you could compare it with the Dura Ace or Halo/All City cogs? Sitting them on a flat surface or screwing them loosely onto a hub and comparing how many turns a lockring will go on.

Thanks!