These coils are compatible with the following range from Innokin
Kits Kroma-A, Coolfire Mini, Coolfire Z50, Z-Biip, Zlide Tube, Kroma-R, Adept
Tanks Zlide (4 & 2ml), Zenith, Zenith Pro, Zenith D22
They are NOT compatible with the Zenith RTA.
The packaging for these coils has likely been updated to say "Z-Coil", rest assured they are the correct sizing for your Zenith and above kits and tanks.