AR-PRO 4.10/3.50-4 Heavy Duty Replacement Inner Tube with TR-13 Straight Valve Stem (2-Pack) - for Wheelbarrows, Mowers, Hand Trucks and More

I bought these because other users claimed theirs had a lock nut and the stem was metal. Mine did not. The very end of the stem had metal threads for the cap is all. A bit worried the stem will not wear well. Also, one of the 2 tubes would not fill with air. Tried to adjust the stem valve and ended up having to replace it. Also, some reviews said they received a stem valve tool. I did not. The tubes do seem to be fairly heavy duty,,,,, except for the stem.

I was surprised to see a fully metal stem with a tapered washer, and two nuts for a good locking. It is the first time I have seen this feature on a Schrader valve.

The tubes were packaged well and appear to be fairly heavy duty.

A good thickness of rubber. I was initially concerned that the air valve was in the middle, however the tube went in well and it seems to be seated ok.

Used the tube to inflate a previously tubeless generator tire. It did the job after some persuasion to locate the valve in the rim.

These are definitely thicker than the original ones so they should last longer.

…just by handling these that they’re heavy duty. Nice and thick, hard to get them in the tire, but not hard enough not to buy them. I’d rather struggle a little bit more getting them in the tire and know that they’re gonna work well for along time. These things are super nice.

It was good guilty iner tube

Arrived on time and good quality!

I used the tires for a small sized quad

Amazingly great deal -- just awesome.

Good product

Entièrement satisfait.