The Fireman’s Friend round wheel brush is a great way to clean tires, rims, wheel wells, instrument panels, as well as all small areas an average brush would find hard to reach. At 4 1/2”, being round in configuration helps protect against dings and provides a variety of options for various size poles. The Nylex fiber is abrasive resistant, flex resistant, chemical resistant and safe for all finishes. A great addition to your Fire Apparatus cleaning supplies.