Review on 🚲 AR-PRO Road/Mountain Bike Replacement Inner Tubes - 26'', 27.5'', 29'' + Presta Valve - 42mm - 6 Tubes + 2 Tire Levers by Michael Robinson

Judging by the comments, buyers of these tubes are surprised that the valve on them is different than the valve on the replacement tube. There are two commonly used valves, Schrader and Presta. Schrader valves look like regular car tire valves, the Presta is much thinner and requires you to loosen a nut before you can inflate it (see attached pictures showing two types). The good news is that even if you have a bike with Schrader valve tubes, you will most likely be able to use these tubes without any problems (the reverse is not true without modification). My bike had Schrader valves, I switched to Presta because I find them much easier to fill. You just need to make sure your pump also supports Presta valves (most currently do). While the local Walmart sells replacement tubes (Slime), they are a bit pricey. I ended up ordering this 6 tube package for $26 as I had 3 bikes that needed replacing. The swap was easy, the tubes fitted well and they lasted 2 months as we have been using the bikes since the swap. The package comes with two tire levers which I didn't have to use.