Pool Filter and Air Conditioner Cleaner

This part attaches to a 3/4 garden hose and is used for cleaning pool filters (though it also works well for cleaning the condenser fins on air conditioners). It's designed to shoot high-pressure water jets out of multiple vertical slots, with internal geometry that angles the jets down. They're spaced so that they do a much faster and better job of cleaning your pool filter than a regular hose sprayer (due to the angle, vertical slots, curved slot pattern and the presence of 7 slots vs. 1).

Unfortunately there is currently no "spray" button, so it's always on, but it can be turned off by bending the hose if your water spigot is not near the place you clean your filter.