This is similar to my "Irrigation Spreader" in that it fits tightly into 1/4" irrigation tubing. However instead of two holes on the side, it has one oval hole in the end. This produces a fan-shaped pattern. I made mine vertically (with the oval hole pointing up) and printed it in PLA at 230 degrees, with no heated bed and 100% fill. It works quite well under low pressure (ie my siphon tank), but would probably handle more than any pressure that would otherwise pop it out of its tubing. This one is more likely to get clogged by debris, so if you have less than clear water you might use my other spreader instead. If you have issues with repeated clogging, I might consider making one with a larger oval hole; just shoot me a message.