The Uwell Nunchaku Replacement Coils introduce the Pro-FOCS Coil. The Plug-Pull mechanism features an ergonomic replacement process with Claptonized A1 (0.25ohm and 0.4ohm versions) heating wires for an optimal balance of flavor and vapor production, as well as the new UN2 0.2 ohm, UN2 0.14 ohm Meshed-H Coils.