It is used to measure the fuel level of automobiles. Featured with high sensitivity, it has easy operation. It is made of good quality ABS and aluminium material, durable to use. Screen inner diameter is 4.3cm and screen outer diameter is 5.6cm. It is suitable for 12V 4/6/8 cylinders and gasoline vehicles. Item Name: Fuel Gauge Material: Aluminium,ABS Compatible Models: for 12V 4/6/8 Cylinders Gasoline Vehicles Supply Voltage: 12V Measuring Range: E-1 / 2-F Size Details: Screen Inner Diameter: 43mm / 1.7" (Approx.) Screen Outer Diameter: 56mm / 2.2" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Fuel Gauge 1 x Fuel Level Transmitter 1 x Oil Float 1 x Rubber Pad 1 Bag of Bolt 1 x User Manual