?WIDE APPLICATION?: The Trivd Frol 550Pcs Stainless Steel Self Tapping Screws Assortment Kit is designed for versatility, making it suitable for use in metal, wood, and plastic applications. The pointed end of these screws allows for effortless penetration into various materials, ensuring a secure and reliable fastening solution for your projects. ?PRODUCT FEATURES?: 1: Environmentally Friendly 2: Corrosion Resistant 3: Rust Proof 4: High Strength 5: Durable and Robust. ?MATERIAL WORKMANSHIP?: Crafted from 100% 304 stainless steel, these screws offer exceptional corrosion resistance and rust prevention, even in humid environments. Their high strength ensures longevity without deformation, while the sharp and sturdy threads prevent stripping during installation. ?CUSTOMIZED SET?: This thoughtfully designed assortment includes 275 pieces of flat head screws and 275 pieces of round head screws, featuring M3, M4, M5, and M6 sizes in various lengths (12mm, 20mm, 25mm, 40mm, and 50mm). This comprehensive collection meets all your fastening needs, making it an essential addition to any toolbox. ?CONVENIENT TRANSPARENT BOX?: The screws come neatly organized in a transparent storage box, complete with a detailed information sheet outlining the sizes of different screws, nuts, and flat washers. This user-friendly design allows for easy access and storage, ensuring you have the right fastener at your fingertips whenever needed.