making a small batch of Texas Avenger "TA" Drivers fully tested running Bistro or Narsil, Clicky or E-switch, SIR800

Did anyone remember (or figure out) what size driver the Courui D01 has? The question was asked earlier here, but I don’t remember it being answered.

Edit: I just looked it up. From this thread:

Do you have a driver board that size?