Estoc Tank Mega is another great work from Vaporesso which applies ECO Universal coil. The EUC ceramic coil is more affordable and ECO-friendly, but equals the performance to a CCELL coil. It allows you to replace only the core of your atomizer by dropping it in and out of its casing. Vaporesso Estoc Tank Mega brings cloud vapor with the purest flavor of your e-juice. Black and silver colors are available.