Description: Have it, you have the equivalent of an Voltmeter, water temperature and oil pressure gauge. The gauges fit in a 52mm hole. Numbers and pointer clearly show. Easy to install, but professional Installation is highly recommended,Securely mount this unit away from any area that may affect driving. This unit is designed for DC12V type vehicles with a negative ground. Specification: Material: Plastic and Metal Size: 180mm*65mm/7.09 inch x2.56 inch Water Temp Gauge Range: 100 °C-280 °C Oil Prees Gauge Range: 0-100PSI Volt Gauge Range: 8V-16V Gauge Size: 2 inch gauge or 52 mm diameter Red Pointer Readout Package Includes: 1 Piece Oil Temp Gauge 1 Piece Water Temp Gauge 1 Piece Oil Pressure Gauge 1 Piece Oil Prees Sensor / NPT1 /8 1 Piece Water Temp Sensor / NPT1 /8 1 Piece Hose 1 Piece Wrie Some Mounting Accessories