There is a plug and a plug and they can be connected together without buying anything extra. contrary to what many have claimed to the contrary. I have about a dozen of these of various sizes, solid and perforated, and have never bought anything to put them together. However, this is not easy and requires a little strength and patience. The end with some protrusions is male and it's not that hard to tell which is which. A connector is only needed when attempting to join two sections where one or both have been cut off and the factory ends are missing. They were relatively inexpensive, under $5, and just what I needed to extend some lengths I had attached to garage gutters to allow water to flow past my covered firewood storage area. Last year I realized I hadn't put it far enough and ended up with a small pond so this year added another 8 feet to the existing one, it goes past the woods and into an irrigation canal. They're not that easy to pull, but you'll need someone to hold one end while you pull the other...or just attach to an existing pipe and pull. Once you connect two lengths with factory ends, they're really hard to pull apart, and if you put the male into the female with water flow, they won't leak...at least I don't. I attach them to metal gutters and then tie them to my pipe frame that holds the pipe so it's going down the slope all the time. I hooked one of these up to the existing 12 foot pipes I had and it's drawing water where I don't need it. I've lightly backfilled about 400 feet of perforations around my fruit trees and berry bushes so I can run irrigation water through them in the summer and I don't trip over previously open channels.
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