KORAM Micro Spray 360 Degree Irrigation Drippers with Support Stake, Pack of 10 Water pressure: 29-58PSI for each 1/4" line. One line could support 20 PCS sprinkler, if just open the top outlet of the sprinkler. And only could suport 5-8 PCS if open both of the outlets. Can be adjusted the water changes and switched off individually, easy to use Comes with barb, you can easily connect PE pipe and drippers. Suitable for 1/4 tube With 18cm to plug for easy plug in pots Garden flower beds, shrubs, trees automatic irrigation