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. 10 Sizes X 1 in. L Hex Hex Head Sheet Metal Screws are ideal for a variety of applications. The hex head provides a tight, secure fit and the screws are made of durable steel for long-lasting performance. The sharp point penetrates easily and the screws are perfect for fastening metal to wood or other materials.