"Our submersible pumps are quality products,designed using the very latest technological develoents. The pumps are suitable for use in hydroponic systems,ponds,aquariums,fountains and systems. The pumps have been developed on the basis of the so-ed synchronous technology,whereby the electrical parts are fully ensulated in epoxy resin.The pumps have an economical,powerful and reliable motor. The entire series are suitable for installat on dry land for in-line use or submersible into the water. Our submersible pumps are equipped with a ceric shaft and therefore also suitable for use in salt water." 1 HAS PRE- INCLUDED - Pre- on the intake prevents debris from entering your pump and extend the life of your pump,Max flow rate: 290GPH,Max Lift Height 6.3ft DURABLE QUALITY - Our Polished Aluminum Oxide Ceric Impeller Shaft insures long pump life because it is non-corrodible and more than 3 times as hard as stainl steel. Epoxy Resin Encasement of key internal motor ponents prevents unwanted conductivity and corros of metal parts SAFE & EASY - Safe for fish with no ed copper. Easy to clean with no tools required to disassemble and clean /impeller. Our Electric Cord is waterproof,18 gau copper wire,ed plug with ground,heavy duty flexible vinyl jaet,resists oil/grease/moisture,abras resistant and very good flexibility at all temperatures 3 THREADED NOZZLES0.51in,0.62in,0.75in - Threaded fittings make it more stable. 4 SUCT CUP at bottom and 6' CORD,so you can sti it on the right side of the aquarium,either vertiy or zontally VERSATILE - Circulate and aerate the water,making it more attractive to your fish or turtles. This submersible pump is for aquarium,fountains,spout and hydroponic systems.