The Test Panel Holder is a hand-held device for spraying paint on to a metal or paper test panel. Once spraying is complete, simply stick the Test Panel Holder to the wall by its magnets while your paint flashes. Metal panels are held by the holding magnet, or if you use paper test panels, they are clipped onto the 'clip board'. When ready to check your color to the car, just remove the test panel from the Test Panel Holder's magnet. Checking your color has never been easier!