Multi-purpose screws that can be used in wood, plastic, masonry and 1mm sheet metal. TX recess for improved driving capability. Razor-sharp slash tip for an ultra-quick start with no pre-drilling required. Sharp deep thread designed for cutting cleanly through wood, allowing fast continuous insertion. Double self-countersunk head, removing the need to counterbore. Heat-treated carbon steel for extra strength to reduce the chance of snapping. Wax-coated for improved insertion. Suitable for screwdrivers, combi drills and impact drivers. Supplied with TX screwdriver bit in a plastic organiser case. Contents: 3.5 x 16 (130), 3.5 x 20 (120), 3.5 x 25 (200), 4 x 30 (150), 4 x 40 (120), 4 x 50 (80), 5 x 50 (65), 5 x 60 (55), 5 x 70 (50) and 5 x 80mm (30) and TX screwdriver bit. Double Self-Countersunk Removing the Need to Counterbore Zinc Construction Zinc-Plated Wax-Coated Deep, Sharp, Single Thread for Cutting Cleanly through Wood Fully & Partially Threaded Lengths Plastic Organiser Case...