Built with a heavy duty 1/10 inch steel deck, this platform cart is able to withstand the toughest loads. It's phenolic caster wheels are molded under high pressure and temperature. Their hardness is comparable to traditional iron wheels. They will wear especially well on concrete, and are the wheel of choice for pallet jacks. Heavy standing loads will not deform these casters. They are highly resistant to oil, grease, gasoline and mild acids.