Premium Quality: Made of high-quality stainless steel for superior strength, corrosion resistance, and durability.Complete Specifications: Includes 7 popular screw sizes (M3x6mm, M3x8mm, M3x10mm, M3x12mm, M3x16mm, M3x20mm, M3x25mm), 20pcs each size, 140pcs screws in total.Easy to Use: Button head design provides a smooth, finished appearance and allows for easy installation with a hex wrench.Versatile: Suitable for various applications, including 3D printing, woodworking, machinery repair, DIY projects, and more.Convenient Storage: Comes with a plastic storage box for easy storage and organization.