Zipp Tangente Aluminium Knurled Valve Extender 65mm for 808 Wheels with Removable Presta Valves

A single 65mm Zipp Tangente knurled valve extender in aluminium, for 808 wheels with removable Presta valves; Zipp recommends it with the Zipp Tangente tube. Like Zipp's other removable-core extenders, it suits most tubes and tubular tyres with removable valve cores: the Presta core comes out, the extender threads into the valve body and the core refits at the top, using 5mm open-end and 4mm closed-end wrenches.