Product Details Freedom Ropes: Freedom Ropes Automatic Deflation: These deflators automatically release air from your tires and stop when the desired pressure is reached. Convenience: You can screw them on and let them work while you attend to other tasks, saving time and effort. Adjustable Pressure: The desired pressure can be set by adjusting the deflators. Set of 4: The kit includes four deflators in a case, allowing you to air down all four tires simultaneously. Saves Time: The automatic stop feature eliminates the need to constantly monitor tire pressure while airing down. Easy to Use: Customers have described these deflators as being easy to use, with straightforward instructions. How to Use (General Idea): Set the Desired Pressure: Adjust the deflator to your desired tire pressure. Screw onto Valve Stem: Screw the deflator onto the tire's valve stem. Release Air: The deflator will start releasing air and automatically stop when the set pressure is reached. Repeat for all Tires: Repeat the process for all four tires. Hard-packed surfaces: 20-25 psi Deep sand or mud: 15-20 psi Rocky terrain: 25-30 psi Remove Deflators: Once the desired pressure is achieved in all tires, unscrew and remove the deflators. Why Air Down Tires for Off-Roading? Lowering tire pressure before venturing off-road is a common practice for improving traction and vehicle performance. Increased Traction: Lowering the pressure expands the tire's footprint, leading to increased traction, particularly on soft or uneven surfaces like sand or mud. Smoother Ride: Reduced tire pressure allows the tire to conform to the terrain, providing a smoother ride. Improved Flotation: On soft surfaces, lower pressure helps the vehicle "float" rather than sinking, improving traction.