The Stainless Steel Organic Cotton Coil (SSOCC) are redesigned atomizer heads for delivering better performing coils than the previous Kanger OCC coil heads. The round-shaped stainless steel replacement coils are made with 100% organic cotton, for delivering a longer lasting vape and better robust flavors. The Kanger SSOCC replacement coils heads are interchangeable and will fit into the following Kanger sub ohm tanks: Subtank, Subtank Plus, Subtank Mini, Subtank Nano, NEBOX, TOPTANK Mini and SUBVOD.