C2 Multi-Purpose Advanced Screws - PZ - Double Countersunk - Yellow Using the most modern manufacturing methods and design techniques, the C2 is a revolutionary high-performance multi-purpose screw. Designed to give ultimate performance in a multitude of materials, the patented twin-cut point gives a consistent and rapid "pick-up" and reduces timber splitting. These unique features coupled with a synthetic lubrication and dual angle thread result in 52% less insertion torque and 43% quicker insertion time. Ideal for Wood, Man-Made Board, Thin Metal & Plastic Deep recess to prevent 'cam-out', giving a precise and positive drive control on every screw Ribs under the head for improved countersinking and to give a smooth and flush finish also prevents splitting and material damage Coated with a high-molecular polymer lubricant that reduces the insertion torque by up to 52% and increases rust protection up to 20 times longer than a standard zinc plating Dual angle thread gives an ultimate performance and an exceptionally high pull-out resistance All sizes up to and including 75mm are fully threaded and lengths 80mm and above all have 70mm thread length NOTE: Sharp point only. Pozi-Drive, Posi Drive, Phillips