4.10/3.50-4" Flat Free Hand Truck Tire Material: PU Foam Color: Black, Blue, Red, Green, ... Grey, Yellow etc. 4.10/3.50-4" Flat Free Hand Truck Tire Tire Material = Solid Polyurethane Rim Type = Steel or ... This tire is lightweight, non marking and most importantly ... Flat Free! This tire can handle up to 300 lbs. Welcome ... to contact us immediately, if you are interested in flat free tire above.