Check the listing for details. 10x55mm Screw Back Rivets, 5 Sets Solid Leather Studs for DIY Black. Condition: New. Listed at 13.07 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 DIY your items at will.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: BlackFinish: ElectroplatedRivet Diameter: 10 x 55mm / 0.39" x 2.17"(Base Dia.*H)Screw Thread Size: M3x7mmScrew Head Dia.: 7mm / 0.28"Suitable for (Max.): 2mm / 0.08" ThickPackage Included:5 x Screw Back Stud Rivets(Head+Screw).