The Rio 8HF HyperFlow Powerhead Flow rate is 550 gph.Max head: 6.5 feetConnections: 5/8" outputDimensions: 4.4" X 2.3" X 2.8"Titanium impeller shaft with ceramic bearingsFor freshwater and saltwater useComplete with mounting bracket and suction cups, strainer with sponge pre-filter and inlet and outlet adaptersMust be fully submersed