Self-Drilling Drywall Screws are designed for efficient and secure installation. They feature a Phillips 2 drive bit and are coated with electroplated zinc for durability. Made from carbon steel with a material grade of SAE C1022, these screws offer strength and reliability. They are fully threaded up to 65mm and perform best at a recommended drill speed of 2000-3000 RPM. Available with a wafer head, they are ideal for assembling drywall ceiling and track systems without the need for pre-drilled holes.