The Wondervape RDA by iJoy is a 24mm dripping atomizer with 4 large offset screw holes in dual gold plated posts that is compatible with single or dual coil builds. Set bottom and adjustable side airflow allow you to customize vapor production, and the rounded top cap and ULTEM drip tip are smooth and cool against the lips. Deep Phillips screw heads prevent stripping and are easy to tighten. An adjustable protruding 510 pin with gold plated contact makes secure connection with any mod.