Will these fit all valve stems?

These are universal hex caps designed to fit standard valve stems on most wheels. Test-fit on one tire before installing all four to confirm compatibility with your specific stem diameter.

Do valve caps need any prep or maintenance before use?

Just unbox and install. No paint, prep, or adhesive required. Wipe with a dry cloth if dust accumulates inside during storage.

Will the black finish scratch or chip easily?

The finish is applied to hard panel material designed to resist road salt and UV exposure. Minor marks may show on black — normal wear for exposed caps. If appearance matters long-term, inspect during tire rotations and swap as needed.