uxcell 1/2" Thread 1-5GPM 2-18LPM Water Liquid Flow Measuring Flowmeter Product Name : Flowmeter;Material : Perspex, Stainless Steel, Plastic Color : Clear, Gray;Overall Size : 3 x 21cm/ 1.2" x 8.3" (D*H) Range : GPM: 1-5;LPM: 2-18 : LPM: 2-18 Input Thread Size : 1/2" NPT;Thread Diameter : 21mm / 0.826" Weight : 156g;Package Content : 1 x Flowmeter