Kenda 700 x 18 700c Presta Tubes
About Kenda - "Think all tires look the same? Look closely and you'll see that Kenda Tires perform to the highest standards across several different categories. For the past 50 years, Kenda has been building a better tire for life's most demanding activities. Actually, they overbuild them to ensure you succeed safely in everything you do."
Tubes for 700 x 18 tires