Cable will reach deep into walls, drains, vents, engine blocks, etc. Powerful halogen lamp illuminates dark locations for clear viewing. Flexible cable bends in every direction to allow precise viewing. Pressure activated light switch is conveniently located but can not be accidentally left on. Integrated focus ring for smooth, continuous focusing. Ergonomically designed, non-slip handle fits comfortably in one hand. 36 in. (914.4 mm).