Review on 6 Inch Dually Valve Stem Extenders - 2 Pack: Heavy Duty, Easy Installation for RV Tires, Truck, Motorhome, and More! by Gary Flick

Bought these for my 2012 Ram 3500 Dual. I'm tired of having to keep stopping at Les Schwabs to have my tires checked. I will be fitting 255/80/17 tires which means it will not be possible to get in between the tires to check pressure. Dump truck haul if only I drive every day. My tires don't chew well. I installed them and had no leaks or problems. There is a small O-ring at the base. DO NOT TIGHTEN TOO! The torque wrench doesn't have to use 30 pounds of force to tighten them or they will leak.