Promotional Auto, Car Sign Circle Magnet 4 in Diam - Removable & Reusable, When starting up your business, car sign magnets are a valuable tool! These always-in-stock items are approximately 0.030 thick. When used properly, car sign magnets can easily be removed and reused without leaving a residue. With your custom imprint prominently displayed, building brand awareness can be a smooth ride. Remove weekly for surface cleaning. automatically added to every car sign. ... #CS62 $4.54/each.