Color: Black Face Power:DC 12V Professional. Diameter:2."/52mm. Measurement range: 50~150 Celsius 6 Months Warranty Universal fit for: most of cars or motors Oil pressure gauge indicates: Low Oil Level; Clogged oil filter; Loose or broken oil line; Oil foaming; Improper oil viscosity; Engine bearing failure Water tempereture gauge indicates: Low coolant level; Defective thermostat; Broken fan belts; Blocked radiator; Leaking cooling system This gauge is designed and manufactured toexacting quality standards to give maximum service and reliability.It can beused inplace of, or in addition to, presently operating indicator lights. Gaugeinsures greater accuracy and provide a wider margin of safety than indicatorlights. Fits all cars/trucks/tractors and marineengines. Package included： 1*Water Temp Gauge 1* Oil Pressure Gauge 1*Voltmeter Gauge 1* Temp Sensor 1*Pressure Sensor