Black phosphate finish that offers better corrosion resistance than the commonly produced black oxideCoarse threads to secure gypsum board to studsPhillips Head #2 DrivePackage included 275 premium screws - 1 PoundIdeal for drywall, wood, and other materialsWhen it comes to working with drywall, not all fasteners are created equal. Because of the properties that make up drywall, it is important to use screws that provide a strong, long-lasting hold and allow for the appropriate amount of countersinking.