The GAS MODS Pallas RTA is 22mm in diameter and has a XL size juice capacity. The GAS MODS Pallas RTA adopts easy top refill system. The GAS MODS Pallas RTA features bottom 6 airflow holes with different size. Users will enjoy a restricted mouth-to-lung vape with the gear. Choosing the different air inserts helps you acquire different air inlet and vape experience.