Decking nails are used for patio and deck construction and a wide variety of exterior applications. The Pro-Fit decking ring shank nails for ease of penetration and optimum holding power. Brand Name: Pro-Fit Length: 3-1/2 in. Nail Type: Deck Finish: Hot-Dipped Galvanized Product Type: Nail Container Size: 5 lb Color: Gray Indoor or Outdoor: Outdoor Packaging Type: Boxed Shank Type: Annular Ring Shank Size: 16D Use for exterior decks and railings. Galvanized for rust resistance ring shank.