Feature:1. Efficient Monitoring: By monitoring the vacuum level, the 52mm vacuum gauge ensures optimal engine performance, optimizes fuel combustion, and improves fuel efficiency.2. Early Detection: By monitoring vacuum changes, the car digital gauge can help detect and identify potential issues, enabling timely repair and maintenance.3. Smooth Operations: Maintaining the correct vacuum level with this gauge helps the engine run more smoothly, reducing vibrations and noise for improved driving comfort.4. High Durability: Made from high grade ABS materials, sturdy and strong, not easy to crack and damage, ensuring reliability and long lasting life for prolonged use.5. Easy Installation: The gauge is extremely easy to install, with the whole process completing in just a few minutes. Suitable for all DC12V circuit systems vehicles.Specification:Item Type: Vacuum Gauge (0-30 IN.HG)Design: Pointer + DigitalMaterial: ABSDiameter: Approx. 52mm / 2inVoltage: DC 10-15VFitment: for all vehicles with DC12V electrical systems.Package List:1 x Vacuum Gauge3 x Connecting Accessories1 x Wiring Harness1 x User Manual