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. Grip-Rite Pro-Twist No. 10 Sizes X 1-1/2 in. L Hex Hex Head Sheet Metal Screws are ideal for fastening applications in a variety of materials. The hex head provides a secure grip and the sharp point penetrates easily. The screws are coated for corrosion resistance and can be used in both indoor and outdoor applications.