Black Crease Nail Puller Horseshoe Nail Puller. The black crease nail puller is used to pull nails from the horseshoe and hoof. It is polished at the jaws or tip and is 12-1/4" overall in length. The length of this tool assists in leverage. The jaws are designed to lock over the horseshoe nail head and along its taper to easily remove a single nail from a creased, swedged, or fullered horseshoe.