I have the Kizoku and I just got the digital vernier out. It won't fit a full on 25mm atty, it's designed for 24mm atties. But it does fit my Ammit 25, coz its only 24mm at the base, increasing to 25mm about 8mm up. The Kizoku has a side part that goes up at an angle. My OBS Engine Nano, which is 25mm all the way up, won't fit.