Comrades， inner tubes before buying， please note: 

1 Some riders said: "I put the tube fitted to the car， just did not ride one day， how tire of it， this tube quality too much garbage ...." Note: The difference is not a tubeless tire quality， your tire pierced， or debris inside your tire， or you do not have installed， damage inner tubes， tire rolling tires is to look at the character of Oh alt 

2: Some riders said: "how the gas tube played， how it expands uneven quality bad， right?" Note: This is what you did in high school physics class lectures， it was because the rubber gas nozzle at is a little thick， and the remaining part is a little thin， different thicknesses， subject to the same pressures， of course， not the same as it expands the size of the alt 

3: There are riders， said: "how I was playing last night， gas tube， drain finished this morning on" Note: In addition to the first reason， there is your valve core is too loose， you need to tighten alt 

How to properly test tube received there is no problem: play a little air， and then into the water to see if there is no leak. 

But the treasurer to sell so long tube， there is a problem not useful on an estimate of one thousand alt 

Kenda inner tube 16 * 1.75 / 2.125 US mouth 

Brand: Kenda 

Model: 16 * 1.75 / 2.125 AV 

Material: butyl rubber (Advanced rubber) 

Gas nozzle type: US mouth 

1 for 16-inch， tire width within the range of 1.75 to 2.125 supporting the use. (Eg tire model 16 × 1.75，16 × 2.125 on the choice of this size tube) 

2 tube gas nozzle watched: American & French gas nozzle gas nozzle， what gas nozzle， to see gas nozzle ring on your car now， the same can be a 

I would often go out cycling with a pump， the kinetic energy of more than one tire repair tools， 

A spare inner tube， tire always afraid. Because sometimes in a hurry， did not make 

Tires， or can not find where to break， so bring a spare inner tube， or will 

Want.