Solid copper decorative nails - 12 gauge, 1.25" long threaded shank. Set of 50 Real copper nail with threaded shank 12 gauge 1-1/4 inch long Rosehead top, approx 1/4" diameter (may vary) Half hardened copper, but drill a small pilot hole if using with very hard wood to prevent the nail from bending Use a rubber mallet or protect the nail head when hammering