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, suitable for various needs. Studs for clothing: ensure your fabric is not thicker than the rivet size. Simply punch a hole and screw on. Easy to attach your favorite rivet designs. The compact box is portable, with all rivets neatly stored in a transparent case. 300-piece leather crafting set includes 4 tools: 1 punch, 1 rivet installer, 1 anvil, 1 punching plier. Color: Gold + Silver + Bronze Material: Iron Package Contents: 1 x Rivet Press Only the above items are included; other products are not part of this package. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3cm.