Capri Tools 10024 Hex Self Tapping Screw Assortment, 200-Piece Eliminate pre-drilling in sheet metal with the self tapping design of this assortment This set is ideal for thicker metal-to-metal applications such as air conditioning and ventillation A large assortment 8 of the most-used sizes is provided by this set to help save money Each piece is constructed with zinc plated steel for corrosion resistance and a stainless shine This set is organized by size/type in a transparent storage case for quick access and protection