The Innokin Prism S replacement coils are designed for use with a range of Innokin kits, such as the T20S vape kit and EZ Watt vape kit. There are three versions of this coil available, each of which will produce a small amount of vapour for MTL (Mouth To Lung) vaping. These Innokin vape coils feature a 'no-spill coil swap' and each coil houses a 510 connector pin. So, by unscrewing the base of your tank you can pull the coil straight out and replace it, quickly and cleanly.