Usage Tips:You will get 10pcs short copper rivets in 9mm x 3.3mm x14mm/0.35Inch x 0.13Inch x 0.55Inch (OD x Pin Dia. x H),10pcs long copper rivets in 9mm x 3.3mm x19mm/0.35Inch x 0.13Inch x 0.75Inch (OD x Pin Dia. x H), 20pcs copper burrs in 9mm x 3.3mm x1mm/0.35Inch x 0.13Inch x 0.039Inch (ODx ID x T) and 2pcs punch rivet tool in 10mm x 100mm/0.39Inch x 3.94Inch (Dia. x H). No more or less quantity to satisfy your daily basic DIY or repair needs. The solid rivet set is made of copper, which has corrosion resistance, wear resistance, long-lasting durability, and ductility feature and is not easy to break. The matching washers can make installation much tighter for ensuring long-lasting strength and support. Copper rivets and burrs have a cylindrical shape with a head at one end and a tail at the other. The head sits on the surface of the material being fastened while the washer and tail are hammered down to fix the rivet in place to offer a sturdy and reliable fastening solution for a wide range of applications. Simple to install hammer-in design. To create a firm hold, use a hammer to hammer the washer in place and cut off the extra pin length with a plier, and then use a tool that flatten or round the tail. Some rivets and burrs may also require a hole punch to create a hole in the material before installation. Use these rivets for crafting, repairing, or even decorating. They are perfect for leatherwork, handmade crafts, and many other applications, like making and repairing belts, bags, keychains, straps, purses, jeans, shoes, and other leather ornaments. Colour:As Shown Material:copper Package Contents: 1set * copper rivets Only the above package content, other products are not included. Note: Light reflection 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.