Features:Clear and bright LED display for indicates the digits. Used to measure the bar boost of automobile.Add a racing look and feel to your ride、 high quality and light weight.High accuracy and easy operation.Easy Installation、 then you can use it conveniently.Specifications:Color: Gray + Black Mirror SurfaceMaterial: ABSLight Source: LED White DisplayPower: DC(10-15V) 12V ProfessionalGauge Diameter: 52mm / 2" Gauge Length: 4.7cm / 1.85inGauge Weight: 87g / 3.06ozGauge Wire Length: Approx. 52cm / 20.47inPVC Hose Length: Approx. 176cm / 69.29inPackage Weight: 244g / 8.62ozPackage Size: 16.5 * 12.3 * 7.8cm / 6.5 * 4.84 * 3.07in (L * W * H)Package List:1 * Bar Boost Volt Gauge1 * PVC Hose1 * User Manual(English)