The VOOPOO YC Replacement Coil is compatible with FINIC series kit, inclusing the Voopoo Finic  AIO 16 and the Voopoo Finic AIO 20. The YC line coil is a ceramic coil, so it brings optimal flavor and massive clouds. Each pack consists of 5 pieces coils. There are three types of the coil which is YC-C 1.6 OHM, YC-R2 1.2OHM and YC-R1 0.6 OHM.