The Aspire K Series tanks are a new generation of glassomizer, which uses the Aspire “BVC” (Bottom Vertical Coil) technology (K3 uses Nautilus BVC). This new technology is designed to last longer while still giving users the purest and cleanest taste from e-liquids. The stainless steel drip tip and the pyrex glass give the K series tanks a strong metallic impression, which makes it look very exquisite and high-end. This unique design also makes it easy to carry, install and refill.
The Aspire K1 tank is Ego threaded, while the K2 and K3 are 510 threaded!!