Usage Tips:12V 2"52mm Turbo Boost Gauge Vacuum Press Meter 0-30PSI/-1~2 Bar 7 Color LED Black Len Specification: Model Number:864173 Product Name: Mechanical Boost Gauge Material:Metal Condition: Brand new Housing color: White Face Color: Black Voltage: 12V Size: 57mm*54mm Boost Reading from 0 to 30 PSI/-1~2 Bar Vacuum and Compression Levels Between -30 to 0 in HG Wire Connection: Red: 12v dash lighting / 12v ignition switch Black: vehicle ground Features: 2"(52mm) Black Face Gauge with a Magnified Tinted Lens. Gauge Depth Measures 1 1/2 Inches. Boost Reading from 0 to 30 PSI. Vacuum and Compression Levels Between -30 to 0 in HG. Suitable for 12V vehicles. LED super bright display. 7 Color LED through dial lighting with color recall ability. 7 Solid Color Settings will meet your requirement, no matter what color you want. The button on the lens can switch the color of light you want. Fitment: Universal Car 2/52mm diameter Mechanical Boost PSI Gauge (The compatibility just for reference .Please make sure the item fit for your car before purchase.) Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3.Although Instructions Is Included.Professional Installation Is Highly Recommended 4.The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding. Package Includes: 1 x Mechanical Boost PSI Gauge 1 x Silicone Vacuum Hose 1 x T-fitting 1 x Cable (Including Other Mounting Hardware)