corkiCycles 27.5 Mountain Bike Tube 27.5 x 1.75 1.9 1.95 2.0 2.1 2.125 2.2 2.25 2.3 2.35 2.4 Presta/Schrader Valve, Butyl Rubber 650B Bike Inner Tube 2 Pack

I certainly wouldn’t say these are heavy duty. The whole package stunk like fish. I installed the tubes and they are working well. I doubt they will hold up to goat heads.

Fits and works well.

Haven't used the tubes, and I'll assume there are no issues with them, however I have to deduct 2 stars since they didn't come with the "free tools". Not that big of a deal, but worth noting.

Great product!

Excellent replacement tube for 27.5 tires! It fits and rides great. No leaks so far! Great for trails and gravel.

I bought these tubes as spares for a new e-Bike that I just got. They look like decent tubes. The only thing that I question are the included tire removal tools. I have used plastic tools in the past. I would be hesitant to use metal tools for fear of damaging the bike rims.

These worked perfectly to replace the tubes on my bike that were slowly losing air. Installing bike tubes in general isn’t the easiest thing to do, but you can watch some online instructional videos if you’re unfamiliar with the process and should be able to do it yourself at home without paying a bike shop for service. This kit came with a tool to help you seat the tire on the wheel which was convenient. If your bike tires wont hold air, these are a great option for repair.

This pair of inner tubes are Made of thick Butyl Rubber enhancing its durability and puncture resistance. with included free Tire Lever.