EB-TY "Woodpeckers" is the deck fastening solution for hardwood decks. 316 stainless steel finishing screws offer superior performance even at seaside applications. Threaded approximately 2/3 up shank to tightly draw deck board to supporting joists. Penetrate hardest wood products with ease - pre-drilling often only a board ends. 350 screws and 6-Lobe Driver Bit included inside the pack.