This is a 16-Foot Solar Water Pump Extension Cable with 2-prong quick connector. This cord comes in two sizes:
1) 160+GPH (12 watt kit), 360+GPH (20 watt kit), and the Aerator (10 Watt)
2) 900GPH (70 watt solar water pump kit)
The Solariver solar water pump extension cables include waterproof screw connectors to keep moisture out of the connection. A maximum of 2 extensions (an additional 32') can be added between the pump and panel for a total of 48 feet.