5 Pack, Quarter Pattern, Micro Sprinkler, Flow Control Knob Adjusts Spray Distance, Sprays From 5" To 10" These Low Volume Sprinkler Heads Are Ideal For Watering Flowers & Shrubs, Control Knob Adjusts Water Flow From 0-29 GPH At 25 PSI, Works With Either 1/4" Tubing Or Easily Threads Into A Standard 10-32" Threaded Connection.