The Zipp Tangente butyl road inner tube with a removable core is designed to improve rotational stability by decreasing rotational mass at the valve body. It features a lightweight, smooth aluminum Presta-valve body, 37 mm length with a removable valve core.
Tubes are 700c x 19-23 mm, weighing 79 g without a valve extender. The aluminum valve body saves weight, allowing Zipp to make a tube that is .85 mm thick to optimize durability. Zipp Integrated Valve Extenders also are available in lengths for each Zipp wheel along with a handy wrench set. Please note: this tube has a flat on the valve core and valve stem and is designed specifically for use with Zipp's new Integrated Valve Extenders and Tangente Valve Wrench set. It even has a laser-etched logo on the valve stem.