[Wide Range of Uses] - The solid tires come with different size long spacers, so you can easily change the hub size from the original 2.1 inches to 2.6in, 3.1in, 5.1in, or 6.1in. You can make the wheels better fit your work carriages, garden cars, shelves, recycling boxes, hose cars, trucks, gorillas, yard cars according to your needs.,[Solid Rubber Tires and Wheels] - 2pcs 350-6 tires and wheels, 13 inch flat free wheels with 5/8 inch center bearing and 3.45 inch tire width. All are solid and strong. With wear-resistant pressure and corrosion resistance.,[Strong Load Bearing] - The tire tread is made of high-quality polyurethane, and the bearing is made of high-quality steel. Double bearings. The wheel hub is wider so the load bear is stronger. The maximum load capacity weight of the 2 wheels is 350 lbs. Diamond pattern design, more friction, more anti-skid. Note: This load capacity is a dynamic load and is not suitable for placing heavy goods at rest for a long time.,[Easy to Install] - These wheel assemblies are easy to install and remove. Just insert the wheel into the axle and fix the axle nut cover or cotter pin. We also provide an additional 8 metal spacers and 4 pins.,[Get Rid of Inflation] Use the solid tires and never worry about air leakage on the trolley again. It is so comforting to know your tires will remain inflated each time you want to use the dolly. Take this high-quality replacement tire home now.,[Good Service] If you have any questions, please contact us any time. We will try our best to solve your problems. Note: If you have any questions about the wheel size, you can contact customer service directly.