Sharp 25-degree point allows for quick starting and smooth thread acceptance, reducing splitting and the need for pre-drilling. Double-countersunk head ensures a smooth finish and a strong hold, sitting flush with the material. Zinc coating enhances corrosion resistance, extending the screw's lifespan even in damp environments. High-quality construction ensures durability and reliability for both indoor and outdoor use. The Pozi Countersunk Twinthread Woodscrews are manufactured from case hardened steel C1022 with a bright zinc plated finish. Strong reliable fixing Case hardened.