Oumier Wasp Nano RTA 2ml Rebuildable Tank Atomizer OUMIER WASP Nano RTA is a 23mm diameter rebuildable tank which made of high-quality SS304. It mainly features easy single coil build deck and adjustable bottom airflow design, bringing optimal vaping flavor to users. Together with the 2ml e-liquid capacity, filling via sliding top side-fill port, it offers ample juice storage to enjoy your puff too. Nano RTA features a build deck cutout that makes it an efficient assembly and user-friendly equipment. Implementing a two-post, flathead hexagonal screw at the top are used for single coil configuration. OBS engine Nano RTA improves the versatility and performance of the flavor-oriented atomizer tank. So the Oumier Wasp Nano RTA is really an ideal atomizer for DIY fans. 4 colors are optional. Parameters Size: 23mm x 35mm Material: SS304 Capacity: 2ml Coil: Single Coil Drip Tip: 510 Thread: 510