Our rivets and studs are made of nickel free copper, rustproof and durable,not easy to bend, deform and fade,strong and sturdy. The surface is and ' scratch your hands. Our tubular rivets are good for repairing broken belt, leather craft, DIY clothes, shoes, leather , bags, jeans, hats, jackets, pet collars, adding ornaments and so on. Double cap rivets have 3 sizes: 6x6mm; 8x8mm; 8x12mm. 3 colors: Gold, Silver, Green Bronze, which can cater to your different needs in . Studs for clothing: please make that your fabric is not thicker than the size. Just need punch a hole and screw on. It's easy to add your favorite rivets elements to your . The storage box is compact and easy to carry, all rivets and tools are placed in a transparent storage box. 300 sets leather working tools and supplies come with 4 fixing tools: 1 punch, 1 installer, 1 base, 1 punching pliers. Colour:Gold + Silver + Bronze Material:iron Package Contents: 1 set x press Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.