●Usage: These screw posts are easy to bind and remove, you can use a drill to drill a 5mm diameter hole and then install the screws ●Perfect for decorating bags, belts, handbags, leather bracelets, shoes, hats, all kinds of art and DIY leather craft ●Made of good quality alloy, durable for research and use ●Widely applied for leather handicraft decoration, decorative documents, books, photo albums, binding books, sk booking, and other DIY crafts ●Easy to install and remove, can be used