Bike tube - Choose size 12, 14, 26, 27.5, 650B, 29, 700c bike tubes - road, gravel, mountain bicycle - All tire sizes - Presta or Schrader Inner Tube - Heavy duty latex - Bike tire tube - Bicycle tube

Inner tube ws delivered on 4-11-20, Inner tube was installed and I rode the bike many times w/o problems, last time on 6/16/20. Today 6/24 the tire was flat, did NOT hold pressure, I took the tube out of the tire and quickly found the hole where the valve stem is attached to the tube. for the photo I inserted a thin piece of grass into the hole. With the defect at the base of the valve-stem, it appears that this inner tube can not be repaired. This is a “Freedom Bike DuroLite Tube 700 x 28-32 c I’ll see if I can find a replacement tube from a different seller/manufacturer. This tube came with a 60 mm valve stem, which my rim does not need. I wonder if a 40 mm valve stem could give a small benefit. Hey, I am getting practiced in changing inner-tubes. The 2 replacement tubes are the perfect size, and they hold air pressure very well. It’ll be interesting to see how many miles(Biking time) I get on these tubes, time will tell. Konrad, in St.Louis/MO

Good, worked as intended. Thank you

After providing a detailed review (see below) showing the problems with the various tubes as I attempted to install the tubes, the seller reached out to me. He promptly refunded me for the entire purchase, and as courtesy, shipped me a replacement 3 pack of tubes as a good faith gesture. I have updated the review to 4 stars because of the great customer service. I had already purchased replacement tubes from another source and successfully installed those so i haven't tested the seller's replacement tubes and therefore can't speak to their quality. CP Previous review: (All three tubes had holes in them prior to ever being installed. In addition the valve stem on 1 of the 3 (i bought a set of 3) was bent and defective and was missing the retaining washer the seats against the bicycle wheel frame. Do not buy!!! Chad P)

These didn't fit my mountain bike. They are very narrow and probably only fit road bikes. Installed and the tube blow up. Unfortunately installed after return period. Now I'm stuck with 3 useless road bike tubes. Update: Vendor contacted me and set me a replacement set on tires. Awesome customer service. Thanks guys.

At first, I was thrilled with this purchase. These tubes seemed like a great value, they were the right size, what was not to like? When I changed a tire last fall shortly before I stopped biking for the winter everything seemed fine. I'm not sure if it's the midwest summer (or late spring) heat or what, but over the past few weeks, I have had to replace 4 of these in quick succession. Within a day or two, the reinforced area by the stem simply splits apart. I must have checked and re-checked my tire and outer tube 50 times assuming it couldn't be the tubes, but every one has a small tear by the stem even though nothing else caused it. Just this morning I was replacing one tube and the new one broke while I was filling it with air. So, it's a good lesson about getting what you pay for. These tubes seem like a great deal, but they definitely didn't last for me and I generally think the quality is poor.

The tube was excellent! I was just paying attention too much to the size and not so much. The valve, which was also excellent. By the way, that valve was spectacular. It's one of the best valves I've ever seen. I saw this valve.I said, wow, that's the most spectacular valve i've ever seen, but it's the one that I can't use...

I ordered the three pack for 29x2.40 tires. The description said non-removable cores, the box doesn't specify, but they ARE removable. It's a good thing because one of the three was bent (I replaced it, see pics: bent=left, replacement=right). All three held air and passed the underwater, no bubbles test, then rolled back up neatly into the box for later use. Note: The replacement valve core was mine, they don't come with spares. The bend in the valve core may not have even been severe enough to prevent use (did not bother testing), but still, not good on that one.

The price is right, they hold air well and have removable valves if you need to have that feature for adding extensions or if you’re adding sealant. They seem to weigh about the same as the average rubber tube and seem to work well with the tires to provide a good feel while on the road

My son is a crazy biker and always came home with at least one blown out tube. These seems thicker / heavier and since fitting he has had 4 outings without a flat.

Excellent!

There is a problem with the manufacture of these, a few of the 9 tubes I bought had hole on the first inflation.