Automatic Nozzles - Adaptable to electric pump and gravity flow tanks - Flow rate: 2-14GPM - Hose swivel is included Automatic Shut-off Nozzle - Adaptable to electric pump and gravity flow tanks - Flow rate: 2-14GPM/8-50LPM- Hose swivel is included- Inlet: 1" - Diameter of spout: 15/16" Automatic Shut-off Nozzle