Bendable shaft lets you see anywhere inside the door.he secret to opening any lock is being able to see what you are doing. FlexLight has a 9" flexible shaft that stays bent in any direction so you can shine light directly where it is needed. Use a nylon wedge to pry the door out slightly, then shine the light inside to see the mechanism you want to work on. The FlexLight can also be used to find lost screws inside doors or under hoods. It may be one of the handiest tools you own. Operates on two AA batteries (not included). Made in USA.