Pro-Twist Construction Fasteners are engineered for professional-grade use in commercial, industrial and residential applications. Whether the job involves drywall, steel framing, mobile home construction, electrical or plumbing work, plastering or metal roofing, Pro-Twist has the optimal fastener for every situation. The GRIP-RITE Pro-Twist No. 12 Sizes X 1 in. L Hex Hex Washer Head Sheet Metal Screws 1 lb are perfect for any job that requires a hex head screw. With their hex head design, these screws provide a more secure grip and are less likely to strip. These screws are also made of high-quality steel for durability and long-lasting use.