1)magnetic roof hats with number 2)different color can be chosen 3)good ... any metal surface. Triangular design allows visability from all sides. Hats nest for easy stacking. size:10*11.5*12cm. You ... hat colors, numbers and/or messages. Hat colors available: Black, Blue, Gray, Green, Lime, Orange, Pink, Purple, Red, Tan, Yellow and ... Off, or with a blank dry erase area. magnetic roof hats with number