Accu Pressure Safety Cap, Tire Valve 36 PSI Pressure Indicating Caps (Set of 4)

• Gas Saver Low Air Pressure Indicating Tire Valve Caps. 
• The gas saver cap visually indicates when your vehicle's tire pressure is low by change colors . 
• Green indicator means you are good and when the PSI gets below 31 the color disappears. 
• Operating with lower PSI can result in 20% higher fuel consumption as well as increased tire wear. 
• They are for light trucks and SUVs with a tire pressure of 36 PSI.