- Made of steel with a heavy chrome plating
- Valve stem is straight
- Fits 0.453" valve stem hole
- Quality finish gives a classic touch to your mag or chrome rims
- Set of four

they do the job they were made for and do not leak. i actually use these to pressurize containers with co2 to provide carbonation where the liquid does not contact them. however,since they are chromed they do not pose a health risk even if they came into contact with the liquid. they are reliable and do not cause a waste of expensive food grade gasses.

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