Uwell Crown II Replacement Coils are made for use with the Crown II Tank. The atomizer's conical connector creates superb airflow, simultaneously increasing cooling and preserving flavor. Plus, the stainless-steel casing offers effective protection against drops. Each pack includes 4 coils in two varieties: a 0.25ohm SUS316 Coil (60-100W) and a 0.8ohm Kanthal Coil. Moreover, each coil features a conical positive connector, large wicking ports, and organic cotton.