Leather Studs Rivets Screw Back Rivets Uxcell 15x7.5mm - 10 Sets Hollow Round Head Leather Studs Spike Black Zinc Alloy Leather Craft Rivets DIY Leathercraft Hardware Material: This spike studs rivet is made of zinc alloy material, electroplate finished, wear-resistant and corrosion-resistant, durable. Rivet Diameter: 15 x 7.5mm / 0.59 x 0.3(Base Dia. · Package Included: 20 Sets - 20pcs Rivets 20pcs Screws · Material *H); Screw Thread Size: M3x7mm; Screw Head Dia., : 7mm / 0., 28 Specifications:Material: Zinc AlloyColor: Bronze ToneFinish: ElectroplatingRivet Diameter: 15 x 7., 5mm / 0., 59 x 0., 3(Base Dia. 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. Aazon.co: uxcell 15x7.5 Screw Back Rivets Hollow Round Head Leather... 50 Sets Leather Rivets Gold Tone 8mm Double Cap Brass Rivet Studs *H)Screw Thread Size: M3x7mmScrew Head Dia., : 7mm / 0., 28Package Included:10 x Metal Studs Rivet(Head+Screw), Rivet Diameter: 15 x 7., 5mm / 0., 59 x 0., 3(Base Dia.