Line 20 Snap Fasteners - These snaps are durable, and easy to snap together and apart.  They are even strong enough to stay attached to leather! Use these snaps on pockets, straps, belts and more. Use on interfaced cotton, cork fabric, waxed canvas, vinyl, 5-7 oz leather, and other bag making materials. All of the components to create each snap are included. 3/16" (0.5 cm) post. and 7/16" (1.1 cm) cap diameter.