... quality with cheap price 4)material:PS Feature: 1) magnetic roof top car sign 2)color:red,green,yellow,bule ... fixed in the car top, and anti-scrape flower design to keep, maintenance vehicles, it easy to identify in ... to the roof, hood or any metal surface. Triangular design allows visability from all sides. Hats nest for easy ... Wheel Off, or with a blank dry erase area. magnetic roof top car sign