The valves themselves work great, were easy to install and solved my rubber valve leak problem and still fit the TPMS sensors on my 2013 JK. It took about 20 minutes per tire to pop the bead out with a jack and ratchet strap, take out the old valve and install these new metal valves. However, you will need a torque wrench for assembly. However, Revain has a problem with his inventory. There should be 4 packs. I needed 5 valves so I ordered a lot of 2 to get 8 total. They sent me 2 valves. I then had to call customer service to request the rest of the valves I had ordered (the lady on the phone was very polite, fluent in English and very helpful). From the warehouse they sent me a pack of 4 pieces and another valve. I ended up with 7 valves so it didn't really matter, but I paid for 8 and had to go through the trouble of getting enough for my tires.