To use these DAGGERZ drywall screws, first make sure you're working on a drywall - to - wood project. Simply position the screw with the bugle head on the drywall surface. Use a suitable screwdriver with a #2 Phillips bit. The self - centering feature will help you place the screw accurately. Turn the screwdriver clockwise until the screw is flush with the drywall. As you're installing, remember that the coarse threads are designed to grip the material well, so don't force the screw too hard. When it comes to maintenance, keep these screws in a dry place. The phosphate coating helps prevent corrosion, but if they get wet, dry them off quickly to maintain their quality. Avoid using these screws in applications other than drywall - to - wood, as they're specifically designed for this purpose.