Review on 8PCS Tire Pressure Detection Cap | 2.2Bar 32PSI Upgrade | Anti-Theft Car Tire Pressure Monitor with Wrench & Nut | Tire Pressure Indicator Valve Stem Cap for Motorcycles, SUVs, Bikes, Trucks | Dust Stem Cover | Gold by Yoganand Stradley

I took two packs for my cars. One of the packages contained two non-working tire pressure caps. A few days later I noticed my tire was too low due to the red indicator on the cap so I checked for a puncture in my new tire but to no avail, my tire seemed good. I put a cap on the tire and noticed air leaking out the side of the cap. It seems these caps can withstand pressure. No pun. I removed all tire pressure caps and replaced them with my original caps. I don't want to worry about air leaking through the lids due to poor quality.