We use an Industry Leading 30 mil magnet material that is digitally printed with UV inks. 30 mil vehicle magnet material is a durable, flexible magnetic sheet commonly used for temporary vehicle signage. It has a thickness of 0.030 inches, providing a strong hold on steel surfaces while remaining easy to remove or reposition. However, this material relies on magnetic attraction, meaning it will not adhere to vehicles made of aluminum, fiberglass, or other non-steel materials. Before applying, it's essential to test the surface with a magnet to ensure compatibility. All magnets come with rounded corners to help prevent fly-aways.