[Miniata]

The magnetic vent covers I tried were barely big enough for car numbers, and were very thin, wouldn't trust them to stay on the car at higher speeds or heavy wind. I just buy thicker magnetic sheet stock online to make my numbers. I've bought it from **** Blick art supply, and a race shop. I make templates on the computer, print them out, trace onto the magnetic sheet, and cut out. These have stayed on the car at triple digit speeds on track.