1Powerful: Equipped with 4 premium stainless steel spiral blades, it efficiently reduces waste to 1/8 inch (4mm) and pumps discharge to your sewers, greatly reducing clogging. 2Safe to Use: Equipped with 30 seconds idling protection function, when the water tank is empty or overheated, it will stop working; The switch button is designed on the power cord for easy control. 3High efficiency: Powered by a fully enclosed 12 volt Dc motor, 45LPM, 12GPM open flow, can empty 60 gallons of tank in 5 minutes, which is safe and efficient. 4Low Noise: Equipped with shockproof iron plate mounting feet, can reduce the working noise to a greater extent, the surface is galvanized anti rust treatment, and strong oxidation resistance. 5Parts Size: 3 inch/ 75 mm for Rv connector, 1 inch/ 28 m for hose barb, 7.9 ft/ 2.4 m for electric cord, 11 inch/ 28 cm for pump body length, easy to install in marine or Rv which have 3 inch connector.