Rugged cast metal handle, contoured for optimal fit-in-hand, and with unique forefinger guards for added safety. Provides dependable, hassle-free operation with easy access for blade change, no loose parts to fall out, no unnecessary buttons or functions to fail. One-piece hinged handle design open easily with large thumb-screw knobs without need for a screwdriver. Magnetic blade retainer prevents accidental blade drop when handle is opened. Spring-loaded spare blades clip for safety, also ensures blades remain in prime condition while stored in the handle.