Aiming ring for hand-held X-rays. Simply peel and stick your Bullseye aiming ring onto the clear acrylic shield on your handheld X-Ray. Then the positioning arm of your sensor positioner passively nests into the Bullseye to complete your alignment. Bullseye is your answer! Re-Usable. Economical. Works with all handheld X-Rays. Sensor holder kit not included.