I can not believe the quality of this RDA for the price! If you’re using a regulated mod (non squonker) trust me, pick one up! What have you got to loose? This is kind of an odd review, I wasn’t able to actually use mine. I only have squonk mods and hybrid mechs. This does not include a squonk pin and the 510 pin does not protrude enough for a hybrid mech. I should have paid more attention to the description, entirely my fault. I have a collection of over 70 RDA’s and I can still tell you this machining and build is quality! Eciggity came through flawlessly once again! Sent what I ordered and fast. Excellent site! I highly, highly recommended them!