Advanced high-performance wood screw. Patented twin cut point technology for faster 'pick-up' and reduced torque, resulting in up to 43% faster insertion than a standard woodscrew. Countersinking ribs under the head help the screw to properly countersink into even the hardest timbers. Ideal for use in hardwood, softwood, MDF, thin sheet metal, PVC and chipboard. 5 FREE PZ2 impact bits in every tub!