Review on SAMIKIVA (12 Pack) Aluminum Tire Valve Stem Caps with Rubber Ring - 🚗 Universal Fit for Cars, SUVs, Bikes, Trucks, Motorcycles - Dust Proof Cover in Gray by Troy Gerhardt

I have used them to replace missing valve stem caps on several cars. They are knurled, which makes them very comfortable to grip when screwing and unscrewing. Inside they have a rubber seal. My only complaint is that the internal threads seem to be too long to engage the rubber seal. By this I mean that the internal threads appear to be longer than the threads on all of my stem valves. If this is the case, it means that the seal will not engage and is unusable. Not 100% sure, just my observation. Still looking great and keeping your valve clean and hopefully no leaks.