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These $2 Valve Caps Tell You When Your Tires Need Air

You could eyeball your car tires and try to guess if they’re under-inflated, or you could replace their caps with these tiny sensor valves. Once you have the $2 set installed, you’ll be able to glance at your tires, and tell instantly whether they’re fully inflated (green), a little flat (yellow), or very flat (red). [Tire Pressure Monitoring Valve Cap Set, $2]

You could eyeball your car tires and try to guess if they’re under-inflated, or you could replace their caps with these tiny sensor valves. Once you have the $2 set installed, you’ll be able to glance at your tires, and tell instantly whether they’re fully inflated (green), a little flat (yellow), or very flat (red). [Tire Pressure Monitoring Valve Cap Set, $2]


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