Features & Specifications: -100% leakproof -Innovative top-to-bottom fanned airflow system -Dual / single coils configuration -810 & 510 replaceable drip tip -Size: ?26mm(bottom: ?24.5mm) *52mm -Material: SS, Glass -Capacity: 2ml -Drip tip: 810 & 510 drip tip -Thread: 510 connection What’s in the box: 1 x Arbiter 2 RTA 1 x Spare Glass 2 x Accessory Bag (Bag 1: 2 fused clapton coils?0.4 ohm), 2 shoelace cotton Bag 2: 510 drip tip adapter, o rings, screws and screw driver) 1 x User Manual