- Compatible with RELX infinity RELX Essential Pod - Choose your own flavor! - Salt Nic only. - 2ml capacity tank - Ceramic Core Specifications of RELX Infinity 4th / RELX Essential / Relx Phantom Refill Pod Ceramic Core Empty Cartridge Pods Refillable 2ML Capacity No Leaking Size : 4.5*1.5cm Package include : 1PCS * Pod