Check the listing for details. 5/16" Dome Spikes Studs, 100 Sets Nailhead Screw Back Rivets for Craft, Black. Condition: New. Listed at 19.24 USD. Screw-back stud rivets are suitable for various leather products, such as belts, handbags, shoes, bags, belts, jackets, dog collars, and clothes.SpecificationColor: BlackMaterial: AlloyRivet Size: 8 x 4 mm / 0.31 x 0.16 inch (Dia x H)Screw Thread Size: 3 x 4 mm / 0.12 x 0.16 inch (Dia x H)Screw Head Diameter: 7.5 x mm / 0.3 inchPacking List: 100 Sets x Metal Studs Rivet (100 Pcs x Head + 100 Pcs x Screw)AdvantageReliable Material- This spike studs rivet are electroplated and made of alloy. Each rivet has a smooth and fine surface, is wear-resistant and corrosion-resistant, and is durable. It can keep its color as new after long-term use.Mushroom Shape & DIY Design - The mushroom shape is very suitable for decorating your project.