Zipp Butyl Innertube 700c X 18-25mm Presta Valve, 37mm
Lightweight butyl to minimize weight and rolling resistance featuring a lightweight aluminum valve with removable coreSpecifically designed to work with Tangente aluminum valve extenders (available separately) making inflation easy on deep profile rims while reducing weight and keeping the wheel as balanced as possible. 96g Mfr#:001915094010