High performance all purpose self-countersinking screw for fast accurate driving into softwood, chipboard and most hardwood. Patented slots prevent splitting close to the edge. Ribs and tucks enable flush fitting without surface damage. The thread is lubricated for up to 40% reduction in driving resistance, requiring less torque. The needlepoint allows screws to penetrate most timbers without a pilot hole. The Pozi head and reinforced collar ensure quick driving without snapping or cam-out. The yellow tropicalised coating ensures superior corrosion resistance. This pack includes two Reisser Pozi insert bits.