[name] to build large 20 inch KENDA method 20*1 FV 451 round mouth tube special set

[specification]20*1 FV

[gas nozzle type by mouth

[gas nozzle length]32mm

Comrades， tube before purchase， please note:

1 some friend said: "I put the tube fitted to the car， before riding no one day， how the tire， the tire tube quality too much garbage...." Note: tire inner tube is not poor quality， your tyre pierced， or your tire inside the debris， or you do not have installed tubeless tire， injury， puncture is to look at the character of the oh alt

2: some fans said: "how the inner tube filled with gas， how the expansion is not uniform? The quality is too poor."Note: This is the high school physics class when you have no class， it is because the gas at the mouth of the rubberis a bit thick， the other parts are a little thin， different thickness， by the same pressure， expansion size of course not the same alt

3: and if you said: "how my inner tube last night hit the gas， and this morning it leak finished" note: in addition to the first reason， there is a valve core loose you， need to tighten the ALT

How to correctly test received tube has no problem: a little air， and then into the water， have a look there is noleakage. But the shopkeeper to sell so long tube， one thousand estimation is not used there is a problem of ALT