set2: 12 Set x copper adjustable spray nozzle spray + 4 x Fast Coupling Adapter For irrigation system, suitable for 8/11, 4/7 pipe One way adapter Easy to use 1. Material : Copper and Plastic/plastic 2. Pressure is 1.5-3kg /Flow: 0.2-0.7 liters / minute 3. Water jet diameter :1-4 meters. (As far as 4 meters can spray) 4. Connect 4/7 tubing (5mm inner diameter tubing) or adapter 9/12 tubing , Removable nozzle, easy to clean 5. in line with greenhouse nursery, flower crops on the strict requirements of water mist 7. For gardening watering, balcony watering, greenhouse humidification cooling purposes Color: black + green/gold + black Size: connector length is about 7.5cm size:4 x 1cm Package Contents: 12 Set x copper adjustable spray nozzle spray 1 x Hole puncher 4 x Fast Coupling Adapter