Check the listing for details. 20 Set Flat Studs Rivet 10.5x6.5mm Screw Back Rivets Gun-black. Condition: New. Listed at 13.97 USD. Description:1. Material: This spike studs rivet is made of zinc alloy material, brushed finish, wear-resistant and corrosion-resistant, and 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: Gun-blackRivet Diameter: 10.5 x 6.5mm / 0.39" x 0.47"(Base Dia.*H)Screw Thread Size: M3x6mmScrew Thread Pitch: 0.5mmScrew Head Dia.: 7mm / 0.28"Package Included:20 Sets - 20pcs Spike Stud Rivets + 20pcs Screws.