Blade storage for 5 blades inside handle Ergonomic design grip for comfort Ideal for combining hooked and utility 1992 blades in one knife. Instant blade change button for quicker blade changes Interlock patented blade locking system for greater safety during cutting Knife still operates if dropped Only one blade can be extended at any one time – for safety Patented twin blade retractable knife Thumb Pad for extra grip Torsional resistance prevents knife from separating when twisted