Prepare your semi truck to be Ready for the Road Ahead™, with the Safetruck by Ms.Carita Round Steel Magnetic Flag Holder that acts as a reliable place to mount flags. Thanks to its magnetic materials, this replacement holder is able to connect to the side of any flat steel surface. Manufactured with 120 lbs of holding force to be suitable for most emergency and warning flags. FleetPride is your First Click in Heavy Duty®.