Our rivets and studs are made of copper-free material, rustproof and durable, not easy to bend, deform or fade, strong and sturdy. The surface is smooth and will not scratch your hands. Our tubular rivets are ideal for repairing broken belts, leather crafts, DIY clothing, leather boots, bags, jeans, hats, jackets, pet collars, and adding decorative elements. Double cap rivets are available in 3 sizes: 6x6mm, 8x8mm, 8x12mm, and 3 colors: Gold, Silver, Bronze, to suit various needs. For clothing applications, ensure fabric thickness does not exceed rivet size. Simply punch a hole and screw on the rivet. Easy to install and add stylish accents to your projects. The compact storage box is portable, with all rivets neatly organized in a transparent case. This set includes 300 rivet sets and 4 tools: 1 punch, 1 rivet installer, 1 anvil, and 1 pair of punching pliers. Color: Gold + Silver + Bronze Material: Iron Package Contents: 1 x Rivet press Note: Light and display settings may cause slight color variations between the image and actual item. Measurement error allowance is +/- 1-3cm.