5-inch diameter steel rim with 1-3/8-inch offset hub, Grafoil bearings and 1/2-inch bore 1-1/2-inch wide X 7-inch diameter semi-pneumatic tire with diamond tread 88-lb load capacity These tires are ideal for hand trucks, lawnmowers, utility carts, and other lawn and garden equipment Semi-pneumatic tires are light weight, puncture proof, and provide cushioning. They are designed to not pull away from their rim under use.