Joyetech CUBIS SS316 Coil HeadBSS316-0.5ohm, BF SS 316-1.0ohmBF SS316 head with new designThe head SS316 is designed to operate not only in Temp SS316 state, but also in TCR where the user can set the device to their own preferences, the new upgraded operating V3.0.BF SS316 0.5ohm: for functions SS3..