VEVOR Mechanical Fuel Meter 5 to 30 GPM Digital Diesel Fuel Flow Meter Black Fuel Meter Diesel for All Fuel Transfer Pumps 10BarPerfectly Crafted Fuel MeterAccuracy at Its FinestBuilt to LastZero Return Rotation KnobEffortless Flow AdjustmentVersatile UsagesFlow Rate: 5-30 GPM,Material: Aluminum Alloy & PPS,Accuracy Level: ±1 %,Max. VEVOR Mechanical Fuel Meter 5 to 30 GPM Digital Diesel Fuel Flow Meter Black Fuel Meter Diesel for All Fuel Transfer Pumps 10Bar.