The ULTON Typhoon Taifun GT One Style RTA Rebuildable Tank Vape Atomizer Improved Version Full Kit is in 23mm diameter and holds 4.3ml capacity. The Taifun GT One Style RTA Vape Atomizer comes with 4 PCS Air Inserts: 0.8mm, 1.0mm, 1.5mm, 1.8mm. Tank Tube: Air Pin: 3FVAPE Recommend Products: Learn More