These CoilART Lux Mesh Replacement Coils are made for use with the Lux Tank. There are 2 Options available. The M1 Coils are 0.15 ohms, Rated for use beteeen 50W – 90W, and best use between 60W – 80W. The M4 Coils are also 0.15 ohms, Rated for use between 80W – 150W, and best use between 100W – 120W. They come in Packs of 3.