The Authentic YDDZ T1 MTL RTA Rebuildable Tank Vape Atomizer holds 2.0ml capacity in 22mm diameter. The YDDZ T1 MTL RTA 22mm RTA comes with 4.0ml glass tank tube and top cap. YDDZ T1 MTL RTA supports top refilling system and supports dual bottom airflow control adjustable 3 x Center airflow inserts: 6 air holes airflow insert is pre-installed, Closed... Learn More