We are selling a custom Umarex & other .680 ball mold set for homemade projectiles. The center is for a typical pour-in style mold (pointed front and flat back). Along each side allows you to put the two molds together and use it as a CNC Aluminum ball mold. I have personally used it for Hot glue, high temp wax, and acrylic rounds. When time permits I will try to do a bunch of videos on what can be made with them.