Oumier Wasp Nano MTL RTA The Oumier Wasp Nano MTL RTA is a 22mm MTL RTA , which features a unique adjustable airflow system and double side intake airflow. The easy, single-coil building deck and convenient top filling systemcombine to create this simple, smooth and flavourful vape. Offering a 1.2ml or 2ml liquid capacity, with easy top fill.    Features: Support single coil building Double side airflow system design Applying the adjustable airflow system  Easy top-refilling system   Parameters: 1.2ML/2ML capacity for options Size: 22mm * 40.9mm Capacity: 1.2ml/ 2ml Drip Tip: 510 Coil: Single Coil Fill: Top Refilling