Selection of self-countersinking screws with no need to counterbore. Features reinforced collar to prevent snapping, 2x split prevention slots, deep PZ recess to reduce risk of cam-out, tropicalised yellow coating for rust resistance and lubricated thread to reduce driving resistance. Distinct ribs and tucks allow self-countersinking into all timber and board materials. 25° needle-point offers immediate start. Contents: 3.5 x 25 (220), 3.5 x 30 (200), 4 x 30 (130), 4 x 40 (100), 4 x 50 (70), 5 x 80 (60), 5 x 100mm (50) and grab case. Countersunk Head to Provide a Flush Finish Steel Construction Zinc-Plated & Yellow-Passivated Anti-Friction Coating Deep, Sharp, Single Thread for Cutting Cleanly through Wood Fully & Partially Threaded Lengths Plastic Organiser Case Contents: 3.5 x 25 (220), 3.5 x 30 (200), 4 x 30 (130), 4 x 40 (100), 4 x 50 (70), 5 x 80 (60), 5 x 100mm (50) and grab case. Countersunk Head to Provide a Flush Finish Steel Construction Zinc-Plated & Yellow-Passivated Ant...