This is a good solution for getting at those inner valve stems. At a bargain price. I've had good experience with them anyway. If you can get to the etrailer.com facility, they will install a pair of them for free! Wheel Masters WM8005.
https://www.etrailer.com/Wheel-Acces...rs/WM8005.html
Note also the flow-thru sensors for TPMS, which I also feel I can recommend.
RV 6-Tire Flow-Through Sensor Tire Pressure Monitoring System (TPMS)
https://www.amazon.com/dp/B0131JZIK8..._V949ybFCXRJDM