Blank cartridges coming with white fiber can be filled with a liquid of your choice.
You may refill a blank cartridge as many times as you wish.

Matte black empty cartridges for Joye eGo e-cigarette.
Make cartridges with your favorite e-juice!

Including 
-10pcs Matte black empty cartridges(Round mouth piece) for Joye eGo e-cigarette          
one cartridge can be filled in about 0.6ml e-juice, which can support about 120 mouthfuls.
Please do check the pictures to comfirm if they fit your e-cigarette.

Package   
Simple packing without any box