FREE SHIPPING 5 LBS Grip Rite 16D 3 1/2″ Hot Dip Galvanized Casing Nail New open box came from hardware store that closed down, may be repack for shipping. See pictures for what you are buying. Deep countersunk head. Smooth shank. Diamond point. Hot Dipped galvanized nail Hot Galvanized is corrosion resistant, for exterior useSmall head for countersinkingThin smooth shank helps minimize wood splitting