The wheel bearing hole is 3/4 inches with a 3 inches centered hub. WHAT'S INCLUDED: 2 pieces 13x5.00-6 flat free tires with rim assembly. Extra 4pieces 5/8 bushings, 4pieces (3/4 bore) 1/4 inch long spacers, 10pieces (3/4... 13X5., 00-6 FLAT FREE TIRE AND WHEEL WITH 3 CENTERED HUB: Tire and rim assembly with 13 inches tire diameter, 4., 50 inches tire width, and 6 inches rim size. 4-Pack) 13x5.00-6 Flat Free Tire And Wheel Assemblies - Compatible These are NHS tires not rated for use at highway speeds. The old wheels with inner tires and the wheels without inner tires can be replaced with the same specification of the free inflatable tire! 5.00-6 using polyurethane foam technology, tire density is high, more durable, raw materials no peculiar smell, no doped recycled materials, and will not leave a trace on the ground, is so farconfiguration ceiling in this field! With excellent water evacuation and self-cleaning properties to ensure better longevity and performance. FLAT-FREE SOLID RUBBER TIRES: Solid-core rubber tires with a maximum dynamic load capacity of 440 pounds. Solid rubber tires can better resist cuts, abrasion, and compression. 3MM TURF TREADS: Lawn tractor tires designed for all-terrain use. Hi-Run 13 X 5.00-6 Flat-Free PU Assembly With Bushing (3/4 FLAT-FREE SOLID RUBBER TIRES: Solid-core rubber tires with a maximum dynamic load capacity of 500 pounds. Can withstand multiple punctures without affecting riding comfort and safety