The Barber Tech 3-Knuckle Flexi Arm With Hot Shoe is a device that allows you to adjust lighting and other accessories that you use with the hot shoe of your video camera. The unit consists of a three-piece flexible arm with a 1/4-20 adapter on one end a hot shoe on the other end. Attach one end of the arm to your camera and the other end to your accessory of choice to enable flexible movement and positioning of that item.