Review on 🚲 Enhance Your Wheels with Slime 20145 Steel Valve Caps by Wyteboi Nallamothu

Looks good. There is a small O-ring on the deep end of the lid to prevent air leakage, but everything else is metal. It would be advisable to apply some anti-seize to the threads if you live in an area where there is moisture/salt as corrosion can cause the metal caps to fuse to the shank.