Silver Folding Knuckle Knife Trench Tactical Combat Butterfly - Tophatter's Army Products & Self DefenseThis isn't the type of butterfly knife you buy to do tricks with, but it folds just like a bali folds. It's the ultimate blend of a trench knife, knuckles, along with a dash of balisong folding action! The blade on this knife are self contained in the handle. The handles unfold just like a butterfly knife. The knuckle guard protects the hand. Specifications: Overall Length: 11 inches Overall Weight: 8. 9 oz. Blade Length: 5 inches ( 4. 75 inches sharp