4 1/2″ razor sharp serrated blade cuts through the toughest materials. Thumb activated speed blade allows convenient one-handed use. Lockback design for safety. Space-age ultra-lightweight, yet incredibly strong nylon fiber handle withstands the toughest use. Integral pocket clip. Open length 8 3/8″, closed 4 3/4″. Weighs 1 oz. Lifetime warranty on blade.