Does anyone know what make of inner tube this might be, it doesn't have a threaded valve which means that when you fix a pump it can move into the rim a little.
Probably less wear on the washer in the chuck too. (Annoys me that you have to buy a complete rebuild kit for my Joe Blow chuck when all I need is the presta washer )
I prefer Michelin 700c tubes as they have an unthreaded valve stem.
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