Product Description Grip-Rite Duplex Nail, 16D, 3 in Length, Double Head Style, 0.59375 in, 0.34375 in Head, 8 ga Gauge, Bright Shank, ASTM F1667, For Concrete Forming, Scaffoldings. For concrete form work Special double head facilitates easy drawing in the dismantling of scaffolding, stage frame work and other temporary construction. Smooth, uncoated shank and double head ease removal (second head remains exposed). Made to conform to ASTM F1667
