Check the listing for details. 12 Sets Screw Back Rivets 8x5mm Round Rivet Leather Spike Silver Tone. Condition: New. Listed at 13.64 USD. Description:1. Material: This spike studs rivet is made of zinc alloy material, electroplate finished, wear-resistant and corrosion-resistant, durable.2. Application: Screw-back stud rivet is suitable for all kinds of leather goods, such as belts, handbags, shoes, clothes, etc. You can use it to DIY the bottom of your leather goods to make your items more durable.3. Installation: You need to open a hole in advance, first press the base screw into the hole, and then use the rivet to align the thread and tighten it to complete the installation.Specifications:Material: Zinc AlloyColor: Silver ToneFinish: ElectroplatingRivet Diameter: 8 x 5mm / 0.31" x 0.2"(Base Dia.*H)Screw Thread Size: M3x7mmScrew Head Dia.: 7mm / 0.28"Package Included:12 Sets x Metal Studs Rivet(Head+Screw).