Danner's Supreme® Mag-Drive Utility Pumps have been designed and manufactured using the latest developments in magnetic technology. The pump consists of a power unit encased in water-proof epoxy which creates a magnetic field. This drives a powerful ceramic magnetic impeller, the only moving part. Submersible or in-line use for saltwater and freshwater aquariums and ponds. The Mag-Drive is also extremely energy efficient - over 50% savings compared to equivalent conventional pumps. Includes free pre-filter. Max output: 350 gph; Max. pump height: 10 1/2' ; 35 watts; 10' power cord. Shipping weight: 3 3/4 lbs.