This Aspire Nautilus Tank Kit is an absolutely beautiful 1:1 clone. These look and work as well in every respect as the genuine tanks. With four air flow options, a 5 ml capacity and a Pyrex tank, this atomizer is a great fit for any 510 threaded battery or mod battery. All stainless construction with bottom fill and a removable mouthpiece. If using a mod, 10-12w seems to work best. Kit comes with extra coil and eGo trim ring. The most important factor is the coils, and we carry ONLY geniune Aspire 1.6 and 1.8 ohm. We use these tanks ourselves and never had a problem with the quality. The savings are well worth it. A Beautiful Deluxe Hollowed Out Replacement Tank is available in our Accessory section or as a Deluxe option with the kit.