1.EASY TO USE: Preset the Air Deflators to Your Desired Pressure Between 6-30PSI, and Simply Screw the Automatic Air Deflators One by One on the Standard Schrader Valve Stem to Start Deflating and You can Enjoy the Beautiful Scenery Along , They Will Shut off at the PSI you Set up. Twist Them off and Start the Off-Road.Stocking Stuffers for Men and Women(Factory Preset :18PSI)
    2.QUICKlY AND ACCURACY:Preset Designed Deflators Rapidly Air down the Four Tires Pressure without Removing the Valve Core, No Abrasion of the Valve Core and No Risking losing it.
    3.HEAVY DUTY AND BULIT TO LAST:No Batteries, Durable Brass Construction Four 100% Solid Brass Deflators can Suitable for Most Weather and Conditons During Off- Road Experience
    4.PERFECT for ANY VEHICLE:1 or 4 Tire Deflators Come in a EVA Boxes Suitable for Jeep,Truck, ATV with Schrader Valve, Once finish using Easy for Storage