I FINALLY found a valve stem extender that I can attach to the front tires of my RV and let me check and inflate air without cutting my fingers on the rims. I already had braided extensions on the rear duals, but the front tires were difficult to manage. The first pair I tried didn't frizz, but these worked like a charm. TIP: Don't forget to take a pair of spline pliers with you when installing, as they can hardly be screwed with bare hands. with your fingers and the air will come out as you screw it in (so you'll have to hurry). But they don't seem to be leaking, and now the end of the valve stem is sticking out past the rims where I can access it.