4.10/3.50-4 Heavy Duty Replacement Inner Tube with TR-87 Bent Valve Stem (2-Pack) - for Wheelbarrows, Mowers, Hand Trucks and More 3.50-4 Tire

I use these tubes for my kart Dolly. Perfect fit

These inner tubes are working well for my yard wagon tires, and very reasonably priced.

I bought the two pack. The tubes are excellent. Nice and thick. Make sure you notice whether you need the straight or bent stem. It's worth noting that tires this small can be very tricky to repair because of the diameter of the rim. I ended up bending the rim on my dolly, but it still holds air just fine and the hand truck works the same. Bottom line: great replacement tube but difficult to install without knowing the trick to it. On larger tires, the perimeter of the tire should pull to the center of the rim, allowing the tire to slip off of the rim on the opposite edge of the same side (I used two large screwdrivers for leverage.) This didn't work for me, however, and I ended up bending the rim. The only reason I shared that is for awareness to DIYs. The product is an excellent replacement for a tube that can't be repaired, but be ready for a small challenge if you haven't changed the tires on one this small.

Fairly heavy duty material. Installed easily.

Returned because sold the piece of equipment that we were going to use them on.

I bought these for very simple application. That’s not demanding at all. Price was a major consideration and they fit just fine. Not sure how they will hold up for the long term, but I think they’ll be good.

They went on easy enough. We'll see how they hold up through the winter.

like the fact it was easy to find thru amazon thanks

Work well no problem good buy

Me gisto

This inner tube more thick than other it durable thanks

dur à installer mes c'est normal car petit diamètre je le recommande

The tubes worked perfect for some old inflatable casters I had laying around.