Puncture Resistance & Load Balance: The 12x4.10/3.50-6 tire and wheel is made of high quality material and newly upgraded thickness, more puncture resistant, suitable for a variety of road conditions, like sand, gravel, and rough roads. Heavy duty ball bearing ensures good traction even on the most challenging terrain, make push the car more easily. The strong steel rims provides maximum shock absorption, smoother and more comfortable in driving,Wear & Explosion Resistant: This replacement wheel is made of solid polyurethane material, hard-wearing and durable. And the internal explosion-proof design will create an airtight seal in the event of a tire blowout, making equipment operators more safer. Load capacity: 330LBS/Tire. This kind of wheel is suitable for dynamic loads, not for static loads, so please remove the heavy objects after using the cart,Anti-Slip Tread& Eco-Friendly Materials: The 4.10/3.50-6 tire has serrated pattern tread increased friction, better anti-slip effect. Material using carbon black particles technology is also more environmentally friendly, no irritating odor compared to other products on the market,Widely Applicable: The solid replacement tire is suitable for Wheelbarrow, Hand Truck, Trolley, Garden Utility Wagon Cart, Garden Cart, Sack Trolley , Snowblower, Lawn Mower, Generator, All Purpose Utility Tire,etc,Size and Service: This 12x4.10/3.50-6 solid replacement tire's dimension: Wheel: 12'' ; Iron Hub: 6.7'' ; Wheel Width: 3.2"; Axle Bore Diameter: 5/8''. Weight: 4.4 LB/Tire, 1 PC in package. Please check the axle hole diameter before purchase. If you have any questions after purchase, please feel free to contact us, we will glad to help you solve problems