This eCab atomizer uses an innovative new technology by assembling with battery housing directly. It hasn't independent atomizer base which is different from Joyetech eGo-C. This new eCab atomizer body can hold 2ml e-liquid with cylinder appearance for your convenience. You can easily unscrew the atomizer cover from the battery housing with your hand and assemble the atomizer head. It makes removal and cleaning very conveniently and effectively.Replace an old, damaged atomizer cone or stay one step ahead of your vaping experience with a back up cone loaded and ready.