Topeak TurboFlow Valve Combo with RapidHead BlackValve adapters that allow for high flow typically 3x that of standard Presta valves Designed to be clog free to allow for usage with tubeless set ups as well Compatible with Presta valve stems only and adds 30mm to valve length Valve Combo includes Topeak's Rapidhead compatible with most floor pumps to provide maximum air flow Model TurboFlow Valve Combo with RapidHead Description Presta to TurboFlow Valve Conversion and Pump Head Color Black Valve