I periodically have to raise an existing sprinkler head. I have looked at Home Depot, Lowes, online suppliers, etc. and can't find a simple riser extension with a female connection on one end and a male connection on the other! They all have male connections on both ends, which means that you always have to add some kind of coupler which adds unwanted length! Why doesn't someone manufacture the obvious and very simple extension which would simply add the needed length to extend your risers? One ...
