The 180° and the 360° adjustable flow drip emitters have a flow range of 0 to 10 GPH at a preset pressure of 25 PSI. When the cap is rotated the adjustable drip emitter flow and the radius of the soaked area change from a drip to a gentle stream pattern to off. This feature allows the user to adjust the flow to each individual plant as needed. Twisting the dial on the drip emitter towards the "+" or the "-" signs allows the user to increase or decrease the flow rate. Our range of adjustable drip emitters come with 5" spike and 1/4" side barb inlet or with 1/4" barb inlet only. The ideal use for this range of adjustable drip emitters is for a group of plants or under a large individual plant.