With a drill-and-drive design for fast and easy installation, these Precision Striker concrete nails with bit provide economical fastening to concrete, block or brick. The masonry nails feature a galvanized finish for corrosion resistance, making them a great choice for installation to walls, roof decks, and fastening wood or metal studs to concrete. The striker nails are 2 1/2" in length, are available in pack of 25 nails, and include a drill bit.