You can a hole using hole and base setter on to leather fabric Fix the studs into hole, place hand tool on it and hammer it with little pressure These versatile fixing hand tools includes setter base, hollow, and install tool Use tool to a hole in fabric Then by using hammer tool, push grommets together to set the studs Made from carbon steel and metal materials, sturdy and, rust proof and, long term usage Widely used for leather working, art craft project, bags, shoes, sewing, banners, clothing, jackets, leathercraft repair, NOTE: Does not include actual press studs Only comes with tool These press studs snap fastener fixing hand tools set is used for fixing press studs into clothing, repairing handbags, leathercraft, and leather belt, straps and more