The Tsurumi EPT3-50HA is an Engine Driven Trash Pump with Low Oil Sensor. It is powered by Honda gas engines with oil sensor alert. It has high chromium impeller and cast iron volute casing. It has a stainless steel wear plate around the inside of the casing for extra durability. Its galvanized steel hose couplings are for a longer thread life. The Rubber Vibration Cushions are to buffer stress and wear when pumps in operation.