0.5-5 GPM 2-18 LPM Water Flow Panel Mount Type Flowmeter Used widely to measure the flow of water. Suitable for connecting 0.5" male thread water hose. Clear plastic housing for read easily, male and female thread. Product Name: Panel Flow Meter Material: Glass, Metal, Plastic Color: Clear, Gray Total Size: 17.6 x 3.2 x 6cm/6.9" x 1.3" x 2.4" (L x W x H) Range: 0.5-5 GPM, 2-18 LPM Male Thread Diameter: 2cm/0.8" Fit Hose Diameter: 1.3cm/0.5" Weight: 212g Package content: 1 x Panel 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. .