Marathon Flat Free tires provide the bounce and load handling characteristics similar to an air-filled tire with the benefit of never going flat.
Eliminate Downtime, Marathon flat free 10-inch Flat Free Rigid Caster. 10.5-inch Overall Diameter Tire Mounted on a Rigid Caster with a 4x4.5-Inch Mounting Plate. Airless tires have the same bounce, feel, cushioning, and performance as a regular air-filled tire. They are also non-marking and will not be affected by ozone or uv rays. Tires are made of lightweight, solid polyurethane foam and are guaranteed to never go flat.