Usage Tips:Experience hassle free tire pressure management on your offroad journeys with the Automatic Tire Deflators, ensuring a quick and precise adjustment to optimals levels for any terrain. Crafted from copper, these tire accessories feature adjustable pressure, allowing for consistent and deflation to your pre set levels without the need for manual monitoring. For long distance traveler, and militarys vehicle operators who demand efficiency and accuracy in tire pressure adjustments for their rugged adventures. Whether navigating through challenging offroad conditions or preparing for extended travel, these tire deflators provide a maintenance solution that keep you moving with confidence. The set making it a convenient addition to any offroad toolkit for adventurers who prioritize safety and performances. Note: Installation guide not included, we strongly recommend you seek professional installation. Please check as much as possible to make sure the item is what you need. Colour:Black Material:brass Package Contents: 4pcs Tire Deflators Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.