Marathon Industries Universal Fit Air-Filled Wheelbarrow Tire Type: Wheels & Tires Features: High quality 4-ply rubber tire with tube Includes easy to install adapter kit to fit most wheelbarrows and other small lawn and garden equipment 350-Pound load capacity; kit includes 3/4-inch nylon bushings and spacers to accommodate various hub lengths 14.5-Inch tire diameter comes standard with 3-inch centered hub, and 5/8-inch bearings Maximum inflation is 30 PSI, inflate with manual pump only, not for highway use