Look inside engines and gear boxes or behind walls and paneling, avoiding the damage of invasive inspections.The scope responds with finger tip precision; using one hand roll the ring to adjust the focus or press the light button for bright internal illumination. Powerful lamp illuminates dark crevices, you can clearly see very small objects. Sealed lens and submersible cable. High Resolution Lens With Wide Field Of View Fits 3/8" Openings. Look First- save hours of hard work. You'll find countless uses for this amazing new tool! Has 18 inch flexable shaft. Three accessories are available to expand the usefulness of the fiber optic borescope. The ProView 45, an angled mirror that will help you see into hard-to-reach places, the ProMag 1, a magnet attachment which you can use to pick up that nut that got away, and the ProLite 1000, a high-power white light halogen bulb that'll make it easy for you to see into even the darkest recesses.