In a pack of 901 atomizers I ordered there is a part I have never seen before. It has a male end (like a battery) that will screw into an atty. The other end has a female end (like an atomizer) that will screw into a battery. If I connect it between an atomizer and a battery the unit works the same as if it wasn't there. The piece is about half the size of a regular atty. It seems to simply extend the length of the unit. Why would such a thing be wanted or needed? Has anyone seen these for sale?