YunSCM 2Pcs Verdikte 89/102-406 binnenband 20x3.5/4.0 AV32mm Ventil compatibel Elektrische fiets 20 inch Fietsbinnenband 20x3.5 20x3.60 20x3.80 20x4.0

Fast delivery and good

These were advertised as "heavy duty" 20x4 inner tubes. When I opened the box and took one out, I was very pleased at its heft and weight. It was much weightier than the tubes that the bike came with (that kept getting punctures!) I had had several flats in the front and finally one on the rear that I could not repair (it was pretty big!) So, in searching for hefty tubes, I found at least one other brand at a higher price point and read a few of the reviews. I went back to the "Amazon Choice" that had come up earlier and am glad I made that choice! They fit fine and were easy enough to install. I mean to say, it's changing a tube on a bike, something that I had done many times when I was young! I was pretty worried about these, if they would hold up, if they were heavy, heavy duty enough for the type of riding I do! Well, so far, I've put about twenty miles on them over the same graveled and muddy road surfaces that blew out the first ones after about a mile or two. No punctures to report. Well, not yet anyways. Only time and continued riding around the graveled and muddy trails will tell on that! I'm glad I got them is the bottom line. They fit fine, seem to be heavy duty enough, and were easy enough to install.

No issues, inflated fine. Stays inflated. Doesn’t leak. Ideal!

Excellent quality, nice and thick as described. Quick delivery. Would recommend

Qualidade excelente

Vorbildliche Ware, passt wie angegossen.