TRAILHEAD™ Automatic Tire Deflators will automatically reduce the air pressure in a tire to a predetermined level and stop, preventing any further loss of air from the tire. They will function properly whether your vehicle is stationary or traveling at speeds of 20 mph or less.
To use, simply screw on to valve stems and drive off. Two separate adjustment ranges are available: 5 psi to 20 psi, and 15 psi to 40 psi. Choose from; RED, BLUE, and ALUMINUM. (Specify range and color when purchasing.)
The Trailhead Automatic Tire Deflators Kit includes: four screw-on, anodized aluminum deflators, a high-quality pressure gauge, a slide-scale pressure chart, plastic coated (weather-proof) instructions, and adjustment tool all in a handy zippered pouch that easily fits in glove box. The deflators come with a Lifetime Warranty