Description: Material: Made from high-strength alloy steel, these screws offer excellent corrosion resistance, high hardness, and long-term stability. Common Sizes: Available in 18 different sizes, these screws cater to a wide range of applications. They come with a screwdriver and are perfect for small tasks such as securing watch covers, glasses frames, notebooks, and more. Ideal for general-purpose use, they meet your basic fastening needs. Easy to Use: The flat head design allows for convenient tightening, while the sharp screw head easily penetrates various materials, including metal plates, plastics, wood, and other brittle substances. Convenient Storage Box: Each set is packaged in a transparent plastic box with multiple compartments, ensuring that each screw type is kept separate. This organization makes it easy to select the right screw and return it to its place after use. After-Sale Service: Each screw is durable and newly designed. If you have any questions upon receiving your order, please don't hesitate to contact us. We are committed to resolving any issues within 24 hours.