A high speed rotary cutter shreds waste more efficiently, allowing the impeller to rotate faster producing a higher discharge capacity. The brass shredder, nitrile impeller and stainless steel shaft prevents corrosion and is resistant to chemicals. Design allows for direct interchange with other macerators for easy installation. Empties a 30 gallon holding tank in about 3 minutes. Suitable for bowl or holding tank discharge. Self priming to 5 feet. Ignition protected.