The Firestik TRI2-K11 is a magnetic base with a holder on top for the three included orange safety flags. You can easily attach this magnetic flag holder to a metal surface. For example, a car, tractor, crane, shovel, forklift, car or other vehicle and of course on all other metal surfaces.
Please note: If you attach this magnetic flag holder to the roof of a car, it can withstand a maximum speed of 55 km/h.