Simply put a buckle and male button and press. Repeat for the female button. You hear a popping sound when the snap fasteners; this signals that the installation process is complete. You can also search on for about how to snap This kit includes 100 sets of size T5 white snap buttons. Tool toolkit includes a hook awl Our plastic snaps for fabric snaps size is T5. (Cap diameter: . 1/2inch(12 mm) prong length: . 1/5inch (5.6 mm). If you're not good at it or using it for the first time, we suggest that you practice with an unwanted cloth Our snap buttons are made of high-quality material, which is tough, , non- and odorless, and machine washable. At the same time, it not have the trouble of rusting like a metal button Theses plastic snaps for fabric with tool have a wide range of uses, which can be used to make baby romper, nappies, infant clothing, baby diapers, baby bibs, doll carrier, towels, curtains, quilt covers, glove, pillowcase, wallets, bags, umbrellas, raincoats, crafts, and other sewing projects