Minireen 2Pack 3.50/4.00-6 Tire Tube with TR13 Straight Valve Stem Fits 4.10/3.50-6 13x4.00-6 13x5.00-6 145/70-6

I needed these for leaky tires on our garden cart. They are a perfect fit, were relatively easy to install and so far, seem to be performing well. My fear was that I had grass burrs poking through the tire itself that would immediately cause a leak in the inner tube. So far that's not the case. After several days they are holding the air just fine.They feel heavy duty and fit my 3.50/4.00-6 size wheel/tire assembly perfectly.In the few days I've had them, they have performed well whether hauling groceries from the garage to the house or hauling firewood behind my riding mower from the back part of the property. I'm impressed at the quality they evidently have.I have more carts that need tubes, so I'll certainly be ordering more in the future.These were priced well below what I could purchase replacement inner tubes locally for, plus were a good price compared to other choices on Amazon.

Seem heavy duty . . . thicker material than the tubes I’m replacing. Would be a bit better if the valve stem was rotated a bit to the outside . . . Valve stem holes in tire rims are offset from the hub area of the wheel. Otherwise it fit and installed OK. Haven’t had these installed long enough to rate durability.

These are perfect for a garden tractor cart.

Arrived on time and fit perfect. They seem like good quality tubes.

Was a real bear wrestling this tube in between the rim and tire, but finally got it installed and it holds air. Tube seems well made consider the abuse it withstood installing it.