Pack of 2: you will receive 2 pcs 1-inch digital turbine flow meters, which can provide accurate flow measurement for fuel flow, water flow, etc. The flow range measured by our digital flow meter is between 2.5-26GPM /10-100LPM, suitable for most applications Quality Material: this flowmeter is made of quality aluminum alloy material, and the turbine is made of stainless steel, which can prevent when measuring liquid flow and is reliable Accuracy: the flow propeller of the water meter for garden hose is very sensitive, the accuracy of measuring liquid flow is 1%, you can clearly know the size of the flow; Tips: please let the water flow through the digital flow meter fully to more accurate 5 Types of Units: our fuel flow meter has 5 types of measurement, which are , , L, GAL, cubic meter, and you can switch the units on the digital display, which is convenient to read the data Wide Range of Applications: the digital LCD display flow meter is compatible with a variety of liquids, such as , gasoline, , water, etc., and can be applied in fields and equipment such as farm irrigation, , fish ponds, swimming pools, and water purification equipment note: The flow meter is shipped with batteries Material: Aluminum alloy + stainless steel colour: blue Package Contents: 2 x Turbine Flow Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.