One copper electroformed Coffin Nail complete on a 26" copper ball chain. Antique copper patina. Coffin nails have been used for centuries in ritual magic, sometimes for positive spell work, but most often for hexing or spells of malice. These are genuine, heavy metal square nails. We can not authenticate these nails as nails used for coffins. We purchased them as coffin nails from an estate in New Orleans. Nails measure approximately 4.0". Size, shape, and color may vary.