8DUP Features: -Duplex nail.-Smooth, uncoated shank and double head ease removal (second head remains exposed).-Made to conform to ASTM F1667.-10.25 Gauge.-Size: 2.25".-Head size: 0.23" /0.28".-90 Per lb.-50 lb box.-8D Size. Construction: -For temporary construction where nail removal is required, such as concrete forming and scaffoldings. Dimensions: -Overall dimensions: 6.5" H x 9.5" W x 9.5" D.