• Structural screws with washer head and Torx (TX) drive that guarantees optimal torque transmission. • Milling tip and cutting notches reduce screwing resistance by 20%, extending the lifespan of tools. • Double thread with additional spiral for faster grip in wood with less contact pressure. • Special wax coating significantly decreases screwing torque and energy consumption. • High torque allows for screwing into hardwood without the need for pre-drilling. • Fixing notches ensure the head is fully seated. • Manufactured for timber structures and roofing in yellow color.