Smart Car Wheels Valve Air Vent Covers ( 4 Pcs )
Smart Car Wheels Valve Air Vent Covers ( 4 Pcs ). those metallic car wheels tire air vent covers are smart. those smart car wheels valve covers have a 36 psi preset where if below pressure the green portion will drop down. when the green color is close to the top then your tire is inflated. inflating your tires to the recommended psi by the manufacturer will save you gas and give you a more pleasant driving.
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