You can attach and remove valve cores of the length of 2 piece Presta valves by using the Valve Core Tool. The Valve Core Tool can be used as as valve cap. It's available in 5 colours. Black, gold, blue, pink, silver.
Park Tool Valve Core Tool VC-1
Topeak Valve Core Tool - Presta & Schrader
LTR Valve Core Removal Tool
Vittoria Presta Valve Core w/ Caps Pack Of Ten Black
Panaracer Purple Lite TPU Inner Tube Road 700x23-32mm - 65mm Valve
Panaracer Purple Lite TPU Inner Tube Road 700x23-32mm - 85mm Valve
