HIGH QUALITY: Made of superior brass material, beautiful color, sturdy and durable, Rugged, high hardness, can be used for a long time, Classic black color is easily matching. Good accessory to replace the broken ones. Size: 5mm, 8mm (Optional) APPEARANCE: Adopt fine craftsmanship, electroplating treatment, anti-rust, anti-corrosion, and with edges. Suitably used as buckles for belt, scabbard, leather bag, etc. USE INSTRUCTION: Fasten, the thread is neat and clear, they can be inserted post-assembly by dropping them into the slot, inserting a nut into the slot and twisting with a screw locks the nut in place GOOD VALUE OF MONEY: 20Pcs rivets and 20pcs screw in a package, meeting your different use needs, which is convenient to connect a pendant, enjoying your DIY experience WIDE APPLICATION: Suitable for kinds of art and leather crafts and clothes making. Ideal for decorating your bags, belts, leather bracelets, shoes, boots, handbags, hats and much more