Place water right where you want it! Button drip irrigation system 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 irrigation 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 1 GPH feature a barb to barb end allowing you to use them to regulate flows to other types of emitters.