Is there such a thing a decent valve extender?

I have the right inflator head and 2"metal stems on all 6 but it still helps to have extensions on the outer duals. I have very old 3/4" plastic extensions and they are made with thick, strong plastic and they're doing fine. The best extensions are the metal, double sealed, cap, extensions. Sometimes the extensions don't flow W.A.S. and I'm careful not to break my good flowing plastic extensions. Craig