Specifications: 1. Accessories: Fits most 12V gasoline cars, fits 2 inch or 52mm diameter gauge box holder 2. Colors: 7 colors, smoked tint lenses when "off", "on" is the color LED display 3. The meter will display digital and analog LEDs at the same time. 4. Voltage display and warning function. 5. Applicable to: 1-8 cylinders, gasoline vehicles There are many types in the same series: 1: Turbocharging table (Bar) (-1BAR-2.0BAR)/(PSI) (-30 - 30 PSI) 2: Water temperature gauge (40-120 degrees Celsius) 3: Oil temperature gauge (50-150 degrees Celsius) / (100-300 degrees Fahrenheit) 4: Oil pressure gauge: (0PSI-140PSI) 5: Voltage meter (8V-18V ) 6: Air-fuel ratio meter 7: Exhaust gas temperature gauge (2-12 x100 degrees Celsius) 8: Vacuum gauge 9: Tachometer (0-8x1000) 1. Boost gauge bar Accessories: Suitable for all 12V cars (-1BAR-2.0BAR) Package includes: 1 x Turbo Boost Gauge 1 x English User Manual 2. Boost Gauge psi Accessories: Suitable for all 12V cars Package Includes: 1 x Turbo Boost Gauge ( -15~45 PSI) 1 x English manual 3. Water Temperature Gauge Accessories: Suitable for all 12V cars Package includes: 1 x Water Temperature Gauge (40-120 degrees Celsius)/(100-300 degrees Fahrenheit) 1 x English description 1 x Water Temperature Sensor (1/8NPT) 4. Oil Temperature Gauge Accessories: Suitable for all 12V CARS (50-150 degrees Celsius) / (100-300 degrees Fahrenheit) Package includes: 1 x Oil Temperature Table 1 x English description 1 x Oil temperature sensor (1/8NPT) 5. Fuel gauge (psi) Accessories: Suitable for all 12V CARS Package includes: 1 x Fuel gauge (0-140PSI) 1 x Oil level sensor (NPT1/8) 1 x English user manual 6. Voltmeter Accessories: Suitable for all 12V CARS Package includes: 1 x Voltmeter (8-18V) 1 x English user manual >7. Air/Fuel Ratio Gauge Applicable to: All 12 Volt Cars Package Includes: 1 x Air/Fuel Gauge (Oxygen Sensor Not Included) 1 x English User Manual 8. Exhaust Gas Temperature Gauge Applicable to: All 12 Volt car package includes: 1 x EGT exhaust gas temperature gauge (200-1200 degrees Celsius) 1 x exhaust gas temperature sensor 1 x English user manual 9. Tachometer RPM table Applicable: 12 Volt, 1-8 cylinders, gasoline Car package includes: 1 x Tachometer (0-8000RPM) 1 x English user manual 10. Vacuum gauge Applicable to: all 12V car package includes: 1 x Vacuum gauge 1 x English user manual 11 . Fuel Pressure Gauge Suitable for: All 12 Volt Cars Package Includes: 1 x Fuel Prepressure Gauge 1 x User Manual in English 52mm Black Gauge Cup Welcome