Grex 0.087" 3/4" Concrete T-Nails Galvanized & Heat Treated (Hardened) are designed for durability and strength, making them i for securing concrete materials with confidence. These nails are galvanized to resist corrosion and heat treated to enhance hardness, ensuring long-lasting performance in demanding construction applications. for professionals seeking reliable fastening solutions, these T-nails provide excellent holding power and durability. Model Number: GTN87-20