10" RED Hand Truck Tire 4.10/3.50-4 (Flat Free Design) Flat Free Design Means it Performs Like an Air Tire, but is made of a High Concentration of Sold Polyurethane and Can't Go Flat 10" x 3.5" x 4" ( Diameter x Tread Width x Rim) Ball Bearing 5/8" Axles Shaft 2.25" Red Steel Hub Weight Capacity: 250lb