ADJUSTABLE DRIP EMITTER:
Adjustable flow from 0 to 10 GPH. When the cap is rotated the flow from this dripper and the radius of the wetted area can be adjusted from a gentle stream patte, to drip, to off. This allows you to adjust the flow to each individual plant. Twisting the dial on the dripper towards the "+" or the "-" signs will allow you to increase or decrease the flow.