Set of 4 Non-Rust Aluminum Tire Valve Caps - Silver

• Superior-grade valve caps with universal fir for cars, trucks, motorcycles and bikes
• Each cap made from single-piece aircraft aluminum with 2mm-thick walls
• Internal rubber seal, finely-machined threads help prevent leaks
• Non-rusting aluminum with anodized finish to last for years
• Sharp looking with Silver gloss finish; knurled rim for easy grip on/off. Also in Jet Black, Gold

These look like they were hand-made by a machinist! Excellent quality, materials, and finish. Not as bright as chrome-plating, but the finish doesn't peel off either.

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I read a bit about the tire pressure monitoring system (TPMS) and how metallic tire valve caps would corrode to the stems and became anxious to try anything other than the ugly plastic caps already the car. So I tried these with a bit of hesitation.

All that I read suggested these would be perfect and so far, they are. They look great and have not corroded to the steps. I don't remember all the technicalities of why Aluminum was right for me, but that's nothing Google can't solve.