The innovative Joyetech JVIC (Juice Vertical Injection Coil) system adopts a unique method of vertical juice injection resolution. It has a brilliant ceramic cradle which takes a horizontal approach in discovering original and clear flavor as well as large clouds. It's NiCr/SS316 coil wrapped by ceramic cradle. There are JVIC1 0.6ohm head, JVIC2 0.25ohm head and JVIC3 1.2ohm head for MTL/DL vaping. They are perfectly compatible with Atopack Penguin kit and Atopack Dolphin kit. 5pcs each pack.