Seaflo 12V Submersible 500GPH Bilge Pumps are completely submersible, compact, reliable pumps, capable of handling all bilge requirements Each pump features a snap-lock strainer base for easy cleaning, anti-airlock protection, moisture tight seals and marine-grade blocked wiring. Silent and vibrationless running. This pump has a 3/4" (19mm) connection and an Amperage of 1.6A.