Bullzeyebill
Flashaholic
There is only one thickness of twisty, the ID on all arcs is the same.....it is not like a 123 twisty.
I am comparing the Arc 2XAA clicky and twisty. My Arc 2XAA twisty body measures 0.742" on the non knurled main body and 0.756" on the knurled sections. My Arc 2XAA clicky body measures 0.712" on the non knurled sections and 0.729" on the knurled sections. Pretty big difference between clicky and twisty, and reason I asked if your twisty is called the "fat body 2AA body.
Bill