Awhile back, I saw on Vapor Joe's just a wick and coil not the whole replacement head. The wick and coil is already made up to put in the protank head. In the near future, I will try to build a wick and coil myself but right now I'd rather just buy them to save a bit more money than buying the whole replacement heads. I can't remember who sells them. I'm hoping the good people here in the forums can direct me to the vendors who does. Thanks!