HOTSYSTEM Universal 2inches 52mm Dual Hole Dash Dashboard Gauge Meter Mount Pod Holder Black Cover for Car Exhaust Gas Oil Water Temperature Temp Voltage Air/Fuel Ratio Turbo Boost Gauge Material: Plastic Width:6.34"/161mm Height: 2.95"/75mm Hole Depth:2.56"/65mm-3.54"/90mm Suitable for 2"/52mm exhaust gas temp gauge, turbo boost gauge, voltage gauge, tachometer gauge Air/Fuel Ratio gauge and so on. Mounted on any surface,gauge can be hold firmly.