Includes Sizes: 1”, 1-1/4”, 1-5/8”, 2”, 2-1/2”, 3”, Recommended by Professional Contractors, builders and DIY homeowners | For attaching drywall to wood studs, wood to wood and more, Can be ideal for your home, office, or workplace | Black coarse thread, sharp point, Sturdy cardboard box, Phillips drive flat head, durable strong metal steel screws | Coarse drywall screws feature coarse threads to secure gypsum board to studs | Drywall sheetrock screws are used to attach wood to wood and when installing gypsum board to wood studs. They have a sharp point to pierce through drywall, and a coarse thread design to help grab into wood studs. Once the screw has been driven, the bugle head allows for quick and easy countersinking. Packaging design may vary.