BYT-7A014 DC 12V Solar Hot Water Heater Circulation Pump Low Noise 3M Dischar...
Inlet/Outlet: 1/2" male thead. Fit both 1/2" NPT and BSP female thead. We've tested. w/ two brass coupler. 1/2" Male thread on the pump. The OD of the brass coupler is 10mm. Plug type: 2.1mm x 5.5mm female.