?MULTIPLE SIZE?: This comprehensive assortment includes 465 pieces of stainless steel self-tapping screws in 18 different sizes and 2 head types. The Phillips Round heads are available in sizes #8x (1/2'', 5/8'', 3/4'', 1'', 1-1/4'', 1-1/2'', 2") and Hex Washer heads in sizes #8x (1/2'', 5/8'', 3/4'', 1'', 1-1/4'', 1-1/2'') #10x (1/2", 5/8", 3/4", 1", 1-1/4"). ?410 STAINLESS STEEL?: Crafted from high-grade 410 stainless steel, these assorted sheet metal screws are designed for reliable penetration into metal sheets. This material offers superior hardness, stability, and durability compared to traditional 304 stainless steel, making them ideal for a variety of applications, including metal, wood, and plastic. ?2 HEAD TYPES?: The set features two distinct head types: Hex Washer and Phillips Round Head. These multi-head options enhance versatility for various applications. The sharp points of these self-drilling screws facilitate easy penetration, while the smooth, complete threads ensure even force distribution, minimizing the risk of slipping or deformation. ?WIDE APPLICATION?: Self-Drilling screws are perfect for diverse uses in home, office, and industrial settings. They are commonly employed to fasten metal to wood or metal to metal, making them suitable for electronic products, household appliances, mechanical maintenance, and the connection of wall beams. ?EASY TO ORGANIZED?: The screws are conveniently stored in a labeled storage box for easy identification and transport. Each set includes a small screwdriver for size adjustments, ensuring that you can quickly access the screws you need without hassle.