Check the listing for details. 12 Pack 10*11*11mm Metal Button Spikes Rivets for Leather Round Head Black. Condition: New. Listed at 10.12 USD. Rivets for Leather is the perfect accessory to elevate your fashion game and make a bold statement. Whether you are a leather artisan, DIY enthusiast, or hobbyist, our rivets are perfect for a wide range of projects.SpecificationColor: BlackMaterial: Zinc AlloyStud Height: 11mm (0.43")Stud Top Diameter: 10mm (0.39")Stud Base Diameter: 11mm (0.43")Height of Screw: 6mm (0.24")Packing List: 12 Pcs x Metal Button Spikes Stud head and ScrewAdvantageEach pack includes 12 Zinc Alloy Studs with Iron Screws, providing you with ample quantity to complete multiple projects or have a spare supply for future use.InstructionEach spike features a screw-on design, making it easy to attach to a variety of materials. Simply use a screwdriver to secure them in place and create a bold statement.