With 0.5 ohm coil resistance, it’s perfect for fast and even heating for Innokin Kroma-A Kit. Coils in the Innokin Z series. The Kroma – A Zenith Plexus coils are for use exclusively for the Zenith vape tank, a tank designed in corroboration with Dimitris the Vaping Greek and Philip Bursado to ensure a straight forward mouth to lung replaceable coil-head atomizer.