Materials: All snaps, snaps, crimp base, hollow punch and tools are made of high quality metals, then plated in other colors. We have also prepared a hammer to make it easier for you to install the snaps. They are durable and you can use them for a long time Snap Fastener Size: sewing snap button contains 4 pieces (2 caps, a bolt and a socket); And the plug is about 12mm/0.47inch in diameter. 4 colors: gold, bronze, matte black and silver, 30pcs per color Snap Closures: The 120 sets of metal snap fasteners: 1 universal base, 1 hollow punch, 2 templates to install, 1 hammer, 1 transparent storage box. Snap button pliers with 4 colors of, 30 buttons of each color.Color: gold, silver, bronze, gunmetal black 5 fixing tools: with 4 fixing tools and 1 hammer, which makes installation more convenient and efficient; The punching tool will help to punch holes in the target products, then hammer and push the snaps on both sides, the snaps are made of good quality copper. If you don't know how to install the button, please check the detailed steps in the manual Wide Applications: Widely used for leather crafts, handbags, garments, bracelets, etc. leather, jackets, jeans, backpacks, women's bags, shoes, any other sewing projects, etc