wow there are some pretty rude people on here. i know nothing about bikes and still learning. i went out to to bike shops and target and none of them carried the right tube. thats why i asked for a website or a link that has the right tubes online. crazyed27 is the only rational one on here. bike shops have jerk-offs as workers and one shop i went to just handed me a tube without asking me the specs of the wheel. and the bike was GIVEN to me. im of course saving to buy a bike that wont cause this much trouble!