The Tolsen 54057 is a set of black phosphate-coated steel drywall screws designed for securing panels and combined structures. Each screw features a bugle head and a Phillips drive, measuring 4.2 mm in diameter and 70 mm in length, which provides a reliable grip when working with materials like chipboard, thin sheet metal, or aluminum. These fasteners are equipped with a sharp point that allows for rapid penetration into the surface, meaning you can work more efficiently without the need for pre-drilling. The fine thread ensures a stable hold in the material, and the 250 pieces come organized in a convenient color box for easy storage and transport.