... Vibration-free,Anti-airlock Submersible Marine Bilge Pump 12V 1100GPHCE,OEM factory,Sample for testing12V/24V,29mm ... automatic switch which have to match with float switch5,Outlet fitting: 19mm/3/4’’, 29mm/1-1/8’’, ... 1/2’’ (consult with factory)6,Voltage: 12/24volts7,Outlet diameter: 19mm to 40mm8,A must for Bilge, boat ... body:ThermoplasticShaft seal: Lip sealShaft:Stainless steelVoltage: 12v dc/24v dc