These should fit. ProC BF. Look smaller but don't know
Joye ProC BF Replacement Coil Atomizer Head for Joyetech CuBox, CuAIO, Cubis Series
Joye ProC BF 0.5ohm SS316 Atomizer Head for Direct Lung (DL) for Variable Wattage or SS316L TC:
Manufacturer's Recommended Wattage Range: 15 - 30W
Joye ProC BF 0.6ohm SS316 Atomizer Head for Mouth to Lung (MTL) for Variable Wattage or SS316L TC:
Manufacturer's Recommended Wattage Range: 15 - 28W
Joye ProC BF 1.0ohm SS316 Atomizer Head for Mouth to Lung (MTL) for Variable Wattage or SS316L TC:
Manufacturer's Recommended Wattage Range: 15 - 25W
Joye ProC BF 1.5ohm Kanthal Clapton Atomizer Head for Mouth to Lung (MTL) for Variable Wattage:
Manufacturer's Recommended Wattage Range: 8 - 20W