Joyetech BF Coils x 5. The Joyetech BF coils are designed for use with the popular eGo AIO, including the eGo AIO ProBox amongst others. Joyetech BF Coils x 5 Specifications. Coil resistances - 0.5ohm SS316 DL / 0.6ohm SS316 MTL / 1.0ohm SS316 MTL / 1.5ohm Clapton MTL / 1.5ohm LVC Clapton.
