About This Comprehensive Kit: Includes 60 sets of M5*4mm screws along with a small screwdriver packed in a clear storage box—everything you need for your crafting needs! Durable Materials: Screws Leather Rivets are made from high-quality carbon steel with special treatment, high hardness, can ensure sturdy hold and long-lasting use in any project. Excellent Design: Round rivets that can be paired with a variety of colors, the classic metallic exterior finish adds a touch of sophistication to handmade creations, giving a professional look to all your leather and fabric creations. Quick Installation: Designed for user-friendliness, simply punch a hole, align the pieces, and screw them together for a hassle-free assembly experience. Perfectly tailored for DIY enthusiasts, saving time and effort. Wide Application: Perfect for leather crafts, bookbinding, and more, ideal for securing belts, handbags, clothing, and other DIY projects that need reliable fasteners.