These replacement coils make specific use of the Smok Vape Pen Starter Kit. It utilizes quad wicking ports to guarantee quick and consistent wicking. It also uses a 3mm NiCr heating element for auxiliary performance. Compatibility: SMOK Vape Pen 22 SMOK Vape Pen 22 LIGHT SMOK Vape Pen PLUS Features: 0.3ohm Dual Core 0.4ohm X4 Quad Core - rated for 20-50W 0.15ohm Vape Pen Mesh Core 0.15ohm Vape Pen Strip Core Four Wicking Ports 100% Organic Cotton