Works in all masonry-based material including concrete, block, or brick Use these screws for a variety of projects including fixing sill plates, electrical equipment, two by fours, and many other fixtures to masonry Climaseal blue coating delivers long-lasting corrosion protection Chisel edges accurately cut threads into concrete allowing for consistent driving performance and back holding power Advanced thread form reduces installation torque by 30%, allowing for use in a wider range of materials A reputation for quality, strength and ease of installation from industry professionals Made in the USA Approved for use in ACQ treated lumber