Tube with a Schrader Valve Stem and 2.1/4.1 Wall Thickness. The thicker wall thickness helps to keep those pesky thorns and other sharp foreign objects from poking a hole in the riding ...
products and their 700c Presta Valve Tube is no exception. This no-nonsense tube is constructed of butyl rubber for resiliency and durability and is perfect for road and off-road endeavors.