Continental 42MM OR 60MM Presta Valve Bicycle Tube Pack of 2 (2 Pack 60MM, 700 x 18-25)Those fancy new tires you bought arent worth much without a great set of inner tubes to keep them inflated. Put the Continental 26" presta valve tubes in your deep profile rims to shed some grams and keep the air in your tires. Unitube system allows greater compa..