Chicago Binding Screws Leathercraft Studs Rivets. Suitable for all kind of leather crafts and art embellishment. Perfect for decorating your bags, belts, handbags, leather bracelets, shoes, hats and other DIY leather crafts. Also suitable for DIY clothes accessories, notebook binding, scrabook, craft making, etc. Material: Alloy, it is high quality and durable to use. Specification: Base Diameter: Approx. 10 mm/0.39 inch Screw Height: Approx. 5mm/0.19 inch Package Includes: 30 Pieces Screw Rivets Note: Please allow a little size error due to manual measurement. Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the item's color may be slightly different from the pictures. Please understand.