Evidently, what we've got here is a new (fairly new?) MTL tank designed by Ehpro & NatureVape. The Ehpro True, according to web info, is a unique and compact MTL RTA with optional 2ml/3ml e-juice capacity. The True comes in three colors. It mainly features the innovative two ways for coil building. So you can install the coil under the clamp or under the screw, which "brings you much more convenience". Plus the easy top refill design, the Ehpro True MTL RTA "will bring you great vaping experience". And the Ehpro True MTL RTA also comes with five air slots with different diameters for your selection. Size: 22 x 41.5mm(without 510 thread) Capacity: 2ml (a 3ml bubble glass tube included) Material: stainless steel/glass/acrylic Thread: 510 thread It comes with: 1x Ehpro True MTL RTA 2ml 1x 3ml Bubble Glass Tube 1x Screwdriver 1x User Manual 1x A Pack of O-rings 2x Pre-made Coils 2x Philips Screws I do not (yet?) own one of these tanks, so I'm going to turn this over to our resident True expert, @Brewdawg1181, who is definitely enamored with this new little tank! C'mon down, Brew!