Vaporesso's EUC Clapton vaporizer coils feature a vertical Clapton wire wrap, cotton wool backing. The EUC evaporator coils are limited to the essentials, they carry to a certain extent only the winding in a simple sleeve. There are no threads, and no material is wasted that you would not have to change. This is good for the environment, because it eliminates waste, and good for the wallet, since you have a big savings over "full" evaporator coils. An important feature is the compatibility of the evaporator coils to non-proprietary evaporators, this is made possible by a sleeve. The sleeve forms the housing of the EUC coils, with this the coils are compatible in several common evaporators such as e.g. Gemini, Target Pro, Melo and iJust.