This item contains everything you need to make 2.25 inch buttons in our Model m225 ProMaker Button Machine, MultiMaker + 2.25 inch die set, Tecre model 225, and other US manufatured button makers. These are not compatible with Badge A Minit brand machines, or equipment manufactured in China. Pop on over to the 58mm supplies
if you have one of those machines. The shells and pinned backs are made from heavy duty recycled US steel. The mylar is 2.625 inches in diameter, 3 mil thick plastic that protects your graphics and gives the buttons a professional glossy finish.