Hycline 2-Pack Bike Inner Tube: 20/24/26/27.5/29 x1.75-2.125 Inch Bicycle Inner Tubes AV 32mm Schrader Valve, Premium Butyl Rubber Puncture Resistant Replacement Tubes with 2 Tire Levers

These tubes are 27.5”, a size that has surfaced recently. They are Schraeder valves. Which means they are not compatible with the thinner Presta style valves. Remember to install tubes without twisting. This is done with a small amount of air in the tube while installing. Inflate slowly while watching the bead. You want it to be even all the way around, no bulging. Using a pump with a quality gauge inflate to the PSI listed on the side of the tire and top it off every couple of weeks. Hope this helps.

Easy to install quality item durable

I recently replaced some worn tires on my MTB and wanted to replace the tubes as well. This set of tubes came with a set of tire levers as a bonus. The tubes were tightly rolled and when unrolled looked smooth with no imperfections. The Schrader valves looked like they are high quality, as well as the rubber. I appreciate the inclusion of the 2 tire levers as they came in handy when removing the tires. My MTB uses 26” Mavic high performance rims and these tubes were a little thicker than what I am used to, so they were a bit more of a challenge to install. After tucking the tubes into the tires and rims, while inflating and deflating to make sure there weren’t any twists or pinches, they seemed to have settled in. I took my bike out for a test ride, and there were no issues.After several rides including some on technical trails, they are holding up great with no issues. Overall, I really like these tubes. Although the rubber is slight thicker than normal tubes, I feel confident the extra rubber is more durable and is more resistant to blowouts and punctures. They are a little more expensive than other tubes out there, but for the puncture resistance and durability, it might be worth the extra cost.

The product fit well and did what it was supposed to,,,, hold air!!!

Disappointing. The tube blew at only 30psi while installing. The burst bent my rear rim and now I have to replace it.

Bargain priced tubes performed well. When a patch won't hold these are a cheap replacement.

The Hycline tubes ($17) seems like decent quality and I would give it 4 stars except when I compare them to a $7 Bell Brand also available on Amazon.The Bell brand feels slightly thicker than the Hycline and when I look at the valve stem the Bell has a larger patch area which I'm presuming would be a better seal. The Hycline are more than twice the price but you do get the two tire levers, which if you don't already have some are very useful/necessary to have when changing a tire tube.Also note that the Bell fits 1.75 to 2.25 vs Hycline 1.75 to 2.125, so will fit more wheel sizes.If you don't have tire levers Hycline is a good deal, otherwise I would buy the Bell brand.

Two attempts to repair the tube, not working and wasting a lot of time. Have to buy the new tubes to replace, perfection this time.