GOOD TOOLS FOR GOOD WORKS, IMSCREWS FIX YOUR HOME. IMSCREWS 410 STAINLESS STEEL FLANGED HEX WASHER HEAD SELF-DRILLING SCREWS PACKAGE SPECIFICATIONS: ?? Diameter: #8(4.2mm)?? Length: 1-1/2¡±(38mm)?? Head Style: External Hex Washer Head ?? Point Style: Self-drilling ?? Material: Stainless Steel 410?? Package Quantity: 25-Piece ?? High Quality Fully Threaded Hex Washer Head Self Drilling Screws FEATURES: ?? These screws have a sharp point to drill in wood and metal sheet and other steel material, and coarse thread design to help for excellent retention. Use self-drilling screw to fasten materials to aluminum or sheet metal. ?? The hex washer head accepts the socket driver to help prevent over-tightening and damage to the thread or fastener, can be easily installed with suitable hex driver. ?? This screws is organized by Size / Type in a Transparent Storage bag for Quick Access and Protection in an IMSCREWS plastic bag. ???WARNING: All screws products are special sharp with screw point, please keep away from kids.