Marathon Universal Fit Air-Filled Wheelbarrow Tire on Wheel with Spacer/Bushing Kit Included Universal Fit Wheelbarrow Tire. 14.5" Tire Diameter. Pneumatic (air-filled) tire. Ribbed Tread. 3" Centered Hub. 5/8" Ball Bearings. Comes with adaptor kit which includes 3/4-inch nylon bushings and spacers to accommodate various hub lengths. Fits most wheelbarrows and other small lawn and garden equipment. 300 lb load capacity. Inflate with manual pump only. Not for highway use.