Bookbinding kit: Iron rivets are resistant to oxidation, not easy to deform, strong for use. Leather processing kit: Rivets can fully display the distinctive taste of fashion and your personality. LEATHER WORK KIT: Ideal for decorating bags, shoes, belts and more to show off your special taste and personality. Leather repair kit: widely used in leather craftsmanship and buckle closures for belts, bookbinding, wallets, bags, clothing. Metal studs: also suitable as stationery nails, photo album nails, calendar screws Features: - Material: iron binding screw - Dimensions: 0.80 x 0.80 x 0.60 cm - Made of iron with smooth surface, clear grain, smooth and burr-free, no supply of rusty leather - Designed with simple structure, convenient and easy to install and remove, practical for leather craft lovers - Suitable for various DIY leather crafts, such as belt connection, bag decoration, clothing decoration tips for crafts