Features: 1.Function: The PSI tachometer is used for real time turbine pressure monitoring, with low power consumption, long life, high accuracy, short start up time. 2.Parameter: Boost readings from 0 to 30 psi, gauge with black dial, clear lens and illuminated red needle, and the outer diameter is about 2in/52mm. 3.Features: This 7 colors boost gauge allows you to quickly and accurately check your boost levels for precise PSI adjustment. You can also choose any color you want. 4.Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability. 5.Application: Easy to install, good durability, impact resistant, flexible and easy operation, package included filter, and manual for easy installation, suitable for petrol modified models. Specification: Item Type: Turbo Boost Meter Material: ABS Outer Diameter: Approx. 2in/52mm Color Setting: Blue, green, red, bluish green, yellow, purple and white Application: Suitable for all petrol modified models PackageList: 1 x Meter 1 x Filter 1 x Leather Tube 1 x Tee 1 x Cable Sensor 1 x Manual 1 x Harness