【KEY PARAMETERS & IMPORTANT NOTICE】Tire and Wheel Model: 4.80/4.00-8; Tire Diameter 15.5"; Tire Width: 3.6"; Axle Bore Hole Diameter: 5/8"; Centered Hub Length: 6"; Dynamic Load Capacity: 300 LBS. This solid tire is suitable for dynamic load and not for static load,【UNIVERSAL FIT】These solid tires are one of the most commonly used sizes on wheelbarrows and trolleys. Please check carefully before ordering to make sure it matches your previously used tire.,【PUNCTURE-PROOF & INFLATE-FREE】The solid air-less tire is made of premium PU (polyurethane) foam with no inner tube, which has the features of high strength, good wear resistance, and tear resistance. So that you do not have to worry about the problem of tires being punctured. (NOT FOR HIGHWAY USE),【ONE-PIECE WELDED RIM】 These 4.80/4.00-8” tires and wheels are equipped with DOUBLE-SEALED CARBON STEEL BEARINGS to provide flexible rotation and load balancing. And high-strength ONE-PIECE WELDED RIM to make sure it not bend or fall apart with the hub when loading large capacity