These drywall screws are constructed of metal and come in a black phosphate finish. They feature Phillips drives, flat heads, and sharp easy-start points. These fasteners are designed for the installation of drywall and Sheetrock, also known as gypsum board, wallboard and plasterboard, but they are commonly used by many as the multipurpose fastener of choice for a variety of crafts, wood-working projects, repairs and small to mid-size carpentry and new construction projects.