The steel frame has a lifetime warranty, Comes with upgraded TPR Rubber Tread Caster with thicker 1/2-13 stem, Measures 16.50" long and 26.75" wide with an overall material thickness of .50", The cart conveniently loads and unloads in seconds and rolls easily to the job or storage area, A newly designed rounded top provides a better fit and makes for a smoother removal of GoJaks® off the cart.