The GAS Mods Kree V2 RTA Rebuildable Tank Vape At​omizer is in 22mm diameter.

Compared to the old version, some features has been undated on Kree V2 RTA. The oil hole can be closed when you refill to prevent leaking. And there is no need to empty the juice before replace the coil.

Features:
510 threading connection
Adjustable airflow control
Easy building
Dual terminal build deck
Top refiling system
Diameter: 22mm

More details for Kree V2, please check >> https://www.3fvape.com/53777-gas-mods-kree-v2-rta-22mm.html