Deep thread design holds well in both hard and softwoods, Black Oxide plating offers moderate corrosion resistance and offers a distinctive visual appeal. A coarse thread design to help grab into wood studs. During the screw driving, the bugle head helps to quick and easy countersinking. Suitable for installing drywall to wood studs, wood to wood and more in your home, kitchen, office, building or workplace, etc. It’s ideal to Professional contractors, Builders, Do it yourself, homeowners and Daily Users. Numerous quantity screws in a package and at the best price.