3F1 Features: -Nail.-Made to conform to ASTM F1667.-15.5 Gauge.-Head size: 0.1055".-880 Per lb.-1 lb box.-3D Size. Color/Finish: -For trim and fine finishing work.-Small diameter and cupped head for countersinking beneath the wood surface for filling and smooth finished appearance. Dimensions: -Overall dimensions: 1.75" H x 4.5" W x 3.5" D.