42mm Presta Valve Tube

Item delivered timely and in good condition. Very easy to install. Seems to be of good quality for the price! I have used Continental Tires and tubes on other bikes as well and been quite satisfied. Longevity, we’ll have to see, but so far so good. I highly recommend these tubes.

These were the right tubes for the tires I ordered, although, I believe I could have used a smaller one. Nonetheless, it worked out great, however I had a very hard time betting the other beat up tires that were on my wheels, eventually I got them off and installed these tubes along with my new tires, it all looks great. Weather is changing to the better and I already went out for a ride, only a few miles, but I'm happy. Good Deal!

My rating of this product reflects my opinion of these tubes when purchased in new condition. Although the rating is positive, this review is meant as a warning to others that you might, or might not, get a great deal buying from Amazon Warehouse. So far, I've bought 4 of these tubes from Amazon Warehouse. The price is GREAT. I paid around two dollars each. I bought two each of "Condition: Used - Like New" and "Condition: Used - Very Good". The latter were described in detail as, "Minor cosmetic imperfections on the corner of the item. Item will come in original packaging. Packaging will be damaged." The "Condition: Used - Like New" were both exactly that: They looked and performed like new. No, I don't pinch my tubes when installing them. But somebody shopping on (and returning to) Amazon does. The two "Condition: Used - Very Good" tubes were both popped in the same place, where the N00Bs so often pop their tubes. Obviously, Amazon Warehouse doesn't attempt to inflate returned tubes. And the visual inspection skills at Amazon Warehouse aren't perfect. One of the holes made when N00B pinched his (Yes, I am certain. Any lady would have followed instructions.) tube was so large it created a flap of butyl.

These seem to be good tubes, great for the price! I bought the Pesta Valve kind for my 700x28C tires. I had one minor incident with the tubes, so I deducted a star as I feel like the product wasn't quite solid when I received it. I have Schrader Valve pump, so I needed to use an adapter on the Presta Valves when pumping up these tubes. After tightening on the adapter and pumping to ~80 PSI, I tried to remove the adapter, and as I was unscrewing the adapter the inner valve body popped out! I don't think this is supposed to happen. I was able to use a pair of pliers to screw the inner valve body back in, and after re-pumping and gently removing the adapter it seems to be holding up just fine (though I'll write back if I notice anything funny). This didn't happen with the other tube I bought, but it might be because I was more careful with the adapter. So my advice to you all is to just be careful with removing a valve adapter if you need to use one!

It’s been hard trying to find these in the stores so I bought some on here. I was a little skeptical with some of the bad reviews…. Here’s what happened. After I installed the new tube, got it all aired up and then took my dog for her bike/run. Great, the first day, all seemed well. The next night, I went to go for another ride and the tube/tire was flat! I decided just to air it up again and make sure I tightened the valve when done. It has now lasted weeks so far without having to air it up again. Check those valves after you install/air them up! I believe that was my problem.

Tubes are exactly as advertised, well constructed and durable. I run these tubes at 100 PSI on 700x28 Gatorskin tires and they hold pressure quite well, only losing ~15psi over the course of a week.

My bike has 27 x 1-1/8 inch tires and needed replacement inner tubes. It is an older bike with outdated tires (but it still works) and I wanted a good set of tubes that would match a suitable tire in the future. My initial choice was for schrader valves but Continental offered a good replacement tire in the future with matching inner tubes using presta valves. I had problems converting English units to metric and came up with 700 x 28c type tube. My theory is that the tube should match the tire so Continental will be my new standard for tubes and tires with presta valve options being preferred as Continental seems to have more options using this valve for their inner tubes.

Replaced a tube with a flat. Right sized valve height for my Felt road bike. These tubes are no longer seamless, but the quality still appears to be good. Road miles will tell.