polyurethane foam tire: 1. environment friendly, and have a long life 2. light weight but undertake high load capacity Solid polyurethane tire Tire Material = Solid Polyurethane Rim Type = steel with Rim Diameter = 4"Outside Diameter = 10"Width = 3.5"Weight = 1.95 kgLoad Capacity = 120 kgs 1. polyurethane tires Widely used on wheelbarrow, Lawnmower ,hand truck, and trolley 2. abrasion resistance, ...