Where water delivery to an individual plant is needed. Emitters attach to 1/2" or 1/4" poly tubing to deliver water to landscape or garden.
Please note that you might get orange or blue emitters -- they are both 2 gph.
The stream of water was a little too forceful for the intended application of these emitters. I had them in pots of herbs in my garden. In a better location, I think they'd be great!Review by Katie (on 12/27/12)