CATEMIZER! It's pretty much a 30mm doge with slightly different airflow. Huge post holes but only 3 of them.
Yes it is gigantic. There's enough room to do "in between the posts" builds like on 2 post atties.
If you're looking for an 18650 sized atty, with lots of build room and big post holes, you can't go wrong with a Twisted Messes atty. I have zero problem fitting and setting my biggest coils inside of it without worrying about coils touching the inner chamber. I was able to fit this monster in it, no problem. It's a stitched fused 24g alien, 2 strands of 24g for the core 38g or 40g - I forgot - alien, with a 32g stitch.
Also, before I got the Twisted Messes, I could not fit these coils into anything I owned.
And I'm an atty junkie, I have a Kennedy 24, Petri, TM, Hobo v3.1, mutation X v3/v4, doge v2 (a doge v2s may be good for you, it has thinner tolerances on the side walls and on the caps), etc. I own too many atty's.