Want to add a vintage, industrial, or just plain classy touch to your furniture? These upholstery tacks are perfect for the job. You get 40 pieces in a pack. They're made of iron with a red copper tone electroplated finish, so they have that warm, antique brass/copper look. They're sturdy and smooth with no sharp burrs. The dimensions are: total height is 0.98 inches (25mm), the head diameter is also 0.98 inches, and the cap (the decorative part) is about 0.28 inches tall. They're often called 'thumb tacks' because you can push them in with your thumb on soft materials, but for furniture, you'll want to use tools. They recommend using needle-nose pliers to hold the tack and a light hammer (not a giant one) to tap it into place. Please be careful and don't hold them with your fingers! Great for decorating the edges of a headboard, sofa, chairs, or a jewelry box. They can also be used on cork boards. They add a really nice finished look to DIY projects. Just keep them away from kids!