Ehpro Kelpie RDA Atomizer Ehpro Kelpie RDA measures 24mm * 36mm, it is made from stainless steel and resin drip tip that fits perfectly into the mouth. Airflow is controlled by rotating the cap which adjusts multiple small honeycomb-style external air holes that provide air from top to bottom to your coil. The build deck on Kelpie is a postless build deck with easy single coil build and the recommended wattage is 30-50W. Kelpie RDA also includes BF Pin and Juice fill Pin that pair with squonk ...