Dolphin Diamond Amp Master 4750 Type 2 Non-Abrasive Freshwater & Saltwater External Water Pump - Perfect for Aquariums, Ponds & Marine Applications

All Diamond Amp Master Pumps are manufactured using one impeller designed to operate on each motor as close to 100% efficiency as possible. The diamond compact wet end is internally designed to extreme accuracy with highly polished and efficient sized water flow channels. The impellers are perfectly balanced and re-sized to obtain maximum efficiency from each motor. The weather proof outdoor rated, cool and quiet motors have sealed bearings and quality components providing extreme service life.