Features: brand new and high quality 4 colors are available, each set is composed of cap, hole, closed column, stud and hammer. The diameter of the lid is approximately 10 mm, 12 mm, 15 mm, and 17 mm inches. Note: These snaps are suitable for thick to medium fabrics, not for light fabrics. These snaps are made of copper-zinc alloy, using a nickel-free electroplating process, even if they have been used for a long for time, they still look like new. You can use it with confidence, there is a hammer to help you do the work. These metal garment snaps are both practical and decorative, with a beautiful luster, and will definitely bring features to your design. This sewing button is widely used in leather crafts, handbags, clothing, belts, jackets, jeans, backpacks, handbags, shoes, other sewing projects, DIY, etc. Specifications: Material: Copper Color:Bronze/Gray/Silver/Gold Box Size: Approx. 270x270x35 mm/10.63x10.63x1.38 in Package Includes: 100 Set Sewing Buttons with Tools Kit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.