Used for temporary construction where nail removal in requiredFeatures Used in scaffolding and concrete forming applications Double head provides easy removal Not recommended for use in treated lumber or where corrosion is a concern Duplex Nail - Double Head - Smooth Shank - Bright Nails conform to ASTM F1667 and ASTM C514 if applicable Specifications Bright Finish Duplex Head Diamond Point Smooth Shank Type: 8d Duplex Nails 2-1/4" 1 lb