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.