The Caterpillar is a new RDA from Smok. It has a large diameter and drip well which makes building easy, and reduces leaking. The Caterpillar also features adjustable airflow. By turning the ring, you can expose more or less airholes for a more stiff or airy draw. Airflow holes are located on both sides of the top cap so that each of the dual coils gets equal airflow. Inside the cap are 3 posts, which makes it easy to build dual or single coils. Wire is secured by thumb screws, but the screws also have a slot for a flat-head screwdriver if you need to tighten them down even more. The Caterpillar is made of stainless steel with a gold-colored ring that looks great on almost any mod, and comes with a 1.5-ohm dual coil build pre-installed.
Battery size: 18650