Drip Emitters, Adjustable 360 Degree Water Flow Drippers, Garden Irrigation Drippers for 4/7mm Watering System

100% sturdy and durable ABS material Suitable for 4mm/7mm (Inner/Outer diameter) tubes With 1/4" barb thread connection, can easily connect PE pipe and drippers Adjust water flow from 0 to 24 us gal per hour, accordingly 0 to 6.5ft diameter of sprinkling circle Suitable for pots, tubs, ground cover, landscaped gardens, flower beds, etc