You ll have the right fastener for any job with the Hyper Tough 180-Piece Zinc Plated Steel Self Drilling Screw Set with Case available at Wal-Mart Stores Inc. Best used for wood metal and other tough materials the Hyper Tough Self-tapping Screw has a drill point design which enables the screw to drill its own hole in the surface you are working on. No pre drilled pilot hole is needed while using this fasteners kit. The kit comes in a reusable molded case with easy-access labelled compartments.. Be prepared for any job with the Hyper Tough 180-Piece Zinc Plated Steel Self Drilling Screw Set.