Mod: 510 Connection Fits all 25mm and below Atomizers Aluminum construction Self-Adjusting Top Contact to eliminate battery rattle Anti-Rotational Button Powered by 1 x 18650 battery (not include) RDA: 510 threading connection Diameter: 24mm Stainless steel construction Aluminum sleeve 20mm dual-post build deck Shelf-style clamp configurations Two terminals per post PEEK insulators Dual slotted airflow control Shorty Delrin wide bore drip tip