A large (3 3/4″ long or more and over one inch wide) double-ended jack knife with a massive spearpoint main blade and a secondary blade as large as many main blades in smaller knives. While most often found on an equal end handle die, it is sometimes found as a sleeveboard or swell-center. Also called the “Elephant’s Toe Nail,” “Old English Rope Knife,” and “Vest Pocket Axe”.