Use these for my caravan because I have installed pressure and temperature sensors in the valve stem tires. If you mount the sensors on the original short rubber valve stems, they will crack over time and then fail because the sensors cause a slight flex. I installed them myself using the Beat Buster tool sold on Amazon and it worked great. If you go to a tire shop what they want for one of these barrels you can buy a kit. Then, of course, the costs of installing the stem and a few trips backβ¦