Hey builders, I've been living under a rock with this one, which kills me because this is basically my dream atty pre-drilled for me! As the title says it's the Mutation X RDA by Indulgence (which I believe is actually the same factory as youde (Vulcan & Igo RDA's), not positive though), however it was designed (well, it's obviously a Tobh Atty (favorite!), with the drilling neatly done for every big vapor lover (or small vapor/flavor love too) here in the U.S. by a gentleman by the name of Christopher Esker. Here's where you can get it below, and it's specs etc.: Indulgence Mutation X Rebuildable Drip Atomizer And here's one of the reviews that aren't annoying , Matt from Suck my Mod is a good, normal vape reviewer like Todd. It's a great price too! It seems to be unanimously $30.00 wherever you go, and from the reviews I've seen, it's very high quality made. Machined from 304 stainless steel, doesn't leak/whistle, the o-rings aren't too tight (may be a con to some, I personally like a cap that I can adjust on a whim, and won't move on it's own), has a silver plated copper connection (haven't seen that in a while!), posts are machined into the deck (and the center post doesn't spin), doesn't come with a stupid logo etched all over the side, and has EVERY CAPABILITY UNDER THE SUN! I can already hear the critics whining about how ridiculous the air-holes are, but before you do, just know that all of the holes are fully close off-able. If you don't know about the cyclonic design, the holes are going off in a 45 degree angle because it causes the vapor to first hit your coils, and then begin spinning up through your drip tip, which cools down the incoming air to convert hot juice to vapor, agitates the vapor more to aid in vapor production further, pushes the heavy droplets (spitting) against the chamber walls through centrifugal force, preventing juice from getting in your mouth, and also prevents actual vapor from going off in random directions and condensating on posts/walls etc., it's quite clever, and I've personally drilled my atty's like this to find out it noticeably works! SO! If you love the tobh as much as I do, and want the option for ludicrous amounts of airflow (or less for you flavor addicts ), as well as a massive center post hole that's capable of quad 20ga if you fancy, then the Mutation X is for you! I imagine these things will be snatched up by every rambo vaper out there , so don't hesitate too much or they'll be taken by me!. I'm vaping one as I type, and have another ready to go for another project, if anyones interested I can always update what my experience is with it. But I can tell you it's been excellent so far! You do have to know how to build your coils around the airflow though (if you plan on opening it to the max), it'll pretty much cover any drippers needs though from what I've experienced. If they ever make a 26650 (28.5 or 30mm) version of this thing, I'm going to buy a dozen, because I don't think it gets much better than this for big vapor lovers! Vape onwards fellow foggers!