Grip-Rite 16CTDSKR1 16D 3-1/4-Inch Coated Sinker with Brite Smooth Shank, 1 Pound 3-1/4-inch by 9-gauge 11/32-inch diameter checkered countersunk headd Vinyl coated smooth shank, for smooth driving Sturdy cardboard box with view window and description label Approximately 64 per pound Meets or exceeds appropriate ASTM and UBC specifications