These Tolsen drywall screws are designed for securing gypsum boards to wooden or metal frames. This specific variant features a 3.5x19mm size, ideal for thinner materials, and comes in a pack of 500 pieces. They feature a black finish and a trumpet head that sinks smoothly into the material, while the Phillips cross drive ensures a reliable grip during installation. This combination of size and quantity allows you to efficiently secure your drywall based on the thickness of the board and the depth of the supporting structure.