【Package Includes】 There are totally 10 assorted bolt and nut sets in each cardboard pack, plus a hexagon wrench to help you complete the installation hassle-free. It is very practical and easy to store, difficult point to lose the accessories. 【Anti-Rust and Durable】 The binding screw post is made of high quality carbon steel, black powder coating, hard and durable. It is not easy to rust and can be used in damp places. 【Exquisite Workmanship】 The bolt thread is clear and deep, without burrs, which can achieve very strong fixing effect; In addition, the inner hexagon groove design can be matched well with the hexagon wrench to avoid any slip during installation. 【Easy to Use】 First, open a hole 0.5mm larger than the diameter of the nut rod, put the screws and nuts on both sides of the object to be locked, then use a hex key or suitable tool to lock it and finish fixing. 【Wide Application】 This binding screw post is suitable for thin photo albums, decorative bags, belts, sandals,