Sorry, I have to properly answer Thinkgoods question. It may be called a head but thats the first time I heard of that. I am an electrician from the Boston area so I see these quite frequently. They are called "ROSETTES" because they resemble roses before they bud. Now their could be a very tiny possisbility that i am wrong or maybe its a regional thing but seeing that my father is also an elctrician and also has has had the experience of hooking them up personally useing the old Western Union Splice hitch with solder,,, which by the way, taught me how to do one,,who am I to argue.
