Flat-free 10.5-inch replacement wheel for single and double cylinder Justrite hand trucks. Urethane filled wheels will not go flat to ensure mobility of hand trucks on almost any terrain. Features welded steel hub with dual ball bearings, sized for 0.625-inch axle (not included). Size is 10.5-inch x 4-inch.For hand truck models 35008, 35012, and 35030.