These coils are robust, durable, and guaranteed to give you a high-quality vaping experience. These replacement coils are also packed with organic Japanese cotton, which is a massive improvement over the ceramic materials used in the past. The Nautilus coil is easy to replace and will last you a long time. The Aspire Nautilus coil is designed with various Aspire tanks and kits, including Aspire K3 tank, Nautilus tank, Nautilus Mini tank, Nautilus 2 tank, Nautilus 2s tank, Nautilus GT tank, Nautilus Mini GT tank, Nautilus AIO Kit. Available in various resistance options, they feature a BVC (Bottom Vertical Coil) design that enhances flavor and creates a cloud. The Aspire Nautilus BVC coils are revolutionary with a unique vertical coil design that offers large wick segments and can hit your Aspire Tank. This means better absorption and more airflow, delivering a clean, pure flavor to your E-liquid. According to the recommended range setting for your device, Nautilus Replacement Coil (BVC) by Aspire comes with four different variants: 1.8 Ohms coil is best rated at 8W-14W 1.6 Ohms coil is best rated at 10W-16W 0.7 Ohms coil is best rated at 18W-23W 0.4 Ohms coil is best rated at 12W-14W