1.Boost Gauge 3Bar Product Description: Condition: CNSPEED 100% New. Power:DC 12V Professional. Diameter:2.5/60mm. Note:Easy Installation With Users Manual In English,Professional installation is Highly Recommended. Unit: BAR 6 Months Warranty Universal fit for: Most of 12 Volt cars. Package include: 1 * Boost Gauge 3BAR 1 * Boost Sensor 1 * Vacuum pipe 1 * T Joint 2 * Screw 1 * Cable 1 * Gauge Holder 2.Boost Gauge 2Bar Specifications: Color: Black face / white light and amber light Power: DC 12 V professional. Diameter: 2.5 / 60mm. Unit: Kpa Measuring range: 0 ~ 2 (100kpa) Universal setting for: 12-volt cars A pulse meter with two backlights (amber and white light) Package includes: Turbo Gauge Support Gauge Sensor Tube + T piece + filter Cabling Installation Manual Retail CNSPEED box 3.Boost Gauge PSI Features: The gauge is 60mm (it will fit most gauge holders or can be used with the included bracket) It can be connected to white or amber light. It comes with everything you need to install as shown (including sensor) This manometer has the following ranges: Impulse is 0-30 psi, vacuum is 0 to -14.7 psi (0-30 Hg) Adjustable warning setting (between 0-30PSI can be set). Peak Screen-allows you to display your highest reading with a push button.