Self-drilling screws with a hexagonal head are designed for efficient fastening in metal and wood without the need for pre-drilling. These screws feature a sharp drill point that cuts through materials easily, saving time and effort during installation. The hex head allows for a strong grip and high torque using a standard socket or wrench, ensuring a secure and tight fit. Made from durable, corrosion-resistant materials, they are ideal for construction, roofing, and general-purpose use. This pack includes 200 high-quality screws, providing excellent value for both professional and DIY projects.