Steam Crave Mini Robot RTA is a rebuildable tank atomizer for MTL vaping. It has two types of capacity: 2ml (straight glass) or 3ml (bubble glass). It is easy to build with single coil deck. And you will enjoy different and great vaping experience with various air pins options and top airflow design. Features for Mini Robot MTL RTA: MTL RTA bringing top flavor 2 post Single coil deck design with easy building and convenient operation Top filling design with 4 filling openings Leak-proof top-to-bottom airflow with 2 opposing air pins in the top section Exchangeable air pins: 2x 1.6 mm, 2x 1.2 mm, 2x 0.8 mm, 1 x blind included 2ml (straight glass) or 3ml (bubble glass) e-juice capacity More details for this MTL RTA from Steam Crave, please check >> https://www.3fvape.com/50954-steam-crave-mini-robot-rta-mtl.html