These are brand new Genuine Aspire Nautilus BVC replacement/spare 1.6 ohm and 1.8 ohm coils and will fit the Aspire Nautilus, Nautilus Mini & Triton Mini Tank - they will not fit the Aspire K1.
BVC (Bottom Vertical Coil)
This listing is for 1, 2 or 5 coils.
Replacing the Aspire Nautilus and Nautilus Mini coils: Remove the bottom cap, unscrew the old coil and install a new one. Add E-Liquid if it's low and return the bottom cap. Depending on the frequency of use, expect for the coil to last about 2 weeks (500 puffs per day)