The coil is positioned vertically, with organic cotton wrapped around it. These provide faster wicking and can be used at higher wattages compared to the original OCC coils. The housing is constructed from Stainless Steel. SSOCC coils are smaller than previous OCC coils and round, allowing a better fit and more liquid capacity in all of Kanger's tanks. Compatible with all Kanger Subtanks and TopTanks, including the Nebox.