Commonly known as ”The Quiet One”, this pump is almost completely silent, yet it delivers a big, free flowing 1.5 gallons per minute. Simply drop in any tank or bottle with 1-1/2” or larger opening. A 3´ wiring pigtail is included. Just connect to a 12 volt power source. With over 1,000,000 of our pumps around the world, this pump is obviously great!