Say hello to the Gemz Prime Mover RTA! It is 24mm in diameter and 53mm in height. The Prime Mover adopts innovative press-and-rotate design, bringing the top filling to a new level! Between top filling cap and the chamber is a big spring. Take it down and replace the extra drip tip, the Prime Mover will present a new look! The beveled posts support dual coil building too. 4 colors for your selection!