The Recoil Style RDA is a 24mm rebuildable dripping atomizer constructed from 316 Stainless Steel. It features quad-pole design with raised negative post for easy building. Every aspect of this Recoil Style RDA has been meticulously fine tuned. From unique smooth and even airflow design. To the tight clean fit and finish. The result was the Recoil Style RDA. Clean fit and finish. Solid and snappy o-rings and a unique raised and angled airflow to help prevent leaks from over dripping.