Place water right where you want it! Button drip irrigation emitters release water right to the plants root zone. Emitters are pressure compensating, so they deliver a precise amount of water each time, even if water pressure changes. Drip irrigations emitters can be placed along your mainline tubing by punching directly into the mainline tubing, or inserted into the end of a length of 1/4" supply tubing for plants that aren't close to the mainline. Available in 3 flow rates, ½ GPH, 1 GPH, and 2 GPH. The 2 GPH features a barb to a tapered end.