Original Item: Only One Available. Designed in the style of a U.S. Model 1918 Mark I Trench Knife, this is an incredible totally genuine World War One U.S. Knuckle Trench Knife that has a solid bronze American Eagle hilt with four skull crushing knuckle guards. It is formed around a double edged blade. The blade measures nearly 11 inches in length and is 1 3/4 inches wide at the hilt. The overall length is 16 inches. The knife is hefty and weighs 1.6 lbs!