Product Features: 1. Good Quality: Made of copper, hard, sturdy and durable, not easy to get erosion or rust, providing long servicing life. 2. Easy to Sew On: The same kind size of button can easy replace and you never worry about the missing part, good enough for meeting your different needs. 3. Matchable Studs and Sockets: The studs and sockets of the same diameter are matchable, they can be easily buckle together or separate, effective fasteners for any sewing project 4. Wide Applications: The large snaps for sewing works great for all kinds of projects - clothing, coat, hats, baby diapers, jeans, down jacket, shoes, jackets, overalls, windbreaker, backpacks, bibs, embroidery towels, leather craft, DIY craft or other sewing and household etc. Specification: Diameter: 19 mm/ 0.75 inch Material: copper Color: black Quantity: 20 sets Warm Notice: 1. These snaps are small items, please keep them away from children to avoid choking by mistakes. 2. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 3. Please allow 1-2cm measuring deviation due to manual measurement.