Watering entire garden: the flag drippers fit for 1/2 inch trunk lines, also suitable for 1/4 inch branch lines; You can apply the branch lines to irrigate plants further away, ensuring the watering of your entire garden Practical design: equipped with shut-off valves and 2 barbed pipes in large diameter, these drip emitters can provide stable moisture for different , making your garden more alive Long-term to use: mainly made of quality plastic, these flag emitters are with nice resistance to ultraviolet rays, 't corrode or rust easily like other metal , not easy to disconnect and crack, long term to apply in Saving water: these drippers for drip irrigation can well control the flow of water per hour, which can save the water needed for irrigation in an efficient way, bringing more convenience for your life colour:Black+green+blue Material:plastic size:Approximately 4cm in length, 2.1cm in width Package Contents: 30 x 1 GPH irrigation flag dripper in black 30 x 2 GPH irrigation flag dripper in blue 30 x 4 GPH irrigation flag dripper in green Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.