These Tolsen wood screws with a diameter of 4.0 mm and a length of 40 mm are designed for secure fastening in wood, chipboard, and thin metal elements. They feature a gold-copper finish provided by yellow zinc plating, which helps protect the metal from corrosion over time. A key practical advantage is the sharp tip, which allows for direct penetration into the material so you can work faster without the need for pre-drilling. This specific variant comes in a convenient pack of 500 pcs, ensuring you have ample supplies for your project requirements.