Uwell Nunchaku Coil (4-Pack)The Uwell Nunchaku Replacement Coils introduce the Pro-FOCS Coil, which the Plug-Pull mechanism for an ergonomic replacement process with Claptonized A1 heating wires for an optimal balance of flavor and vapor production. Comes in a pack of 4.Features:• 0.25ohm Claptonized A1 - Rated for 40-50W• 0.4ohm Claptonized A1 - Rated for 45-55W