Performance screws are designed for quick starts, self-drilling, and self-countersinking into many materials. They eliminate the need for pilot holes or pre-drilling, with no risk of splitting or snapping.|Anti-friction thread prevents jacking|Partially serrated threaded|Double corrosion resistance|Self-drilling one cutting flute with sharp point means there is no need for pilot hole|For use with MDF, chipboard, hardwood, softwood, plasterboard, PVCu and sheet metal|For interior and exterior use|Each Pack contains a PZ Bit