DescriptionModel Number : 2/4/8LPlastic Type : POMStandard : BSMaterial : PlasticGarden Water Connector Type : Standard ConnectorsBrand Name : WZCWJNLGMOrigin : Mainland ChinaType : Garden Water ConnectorsName : flow stabilizer dripperDescription:Name : RBCFHI 2L 4L 8L Steady Flow DripperThree Size for choose2L 4L 8LPressure: 1.5-4.0 barMaterial: High quality ABS plasticConnection: 4/7mm (inner dia.4mm) (1/4'') tubing, or drill a 4mm hole on main line.Quantity: 20PCSFeature:Pressure compensated.Spray head is adjustable, extend radius is about 15cm / 5.9 inchCompensation constant outlet pressure regardless of pressure changes.Self-cleaning. Has a 1/4-inch barb thread connection.Pressure compensating (1.5-4 bar) regardless of the pressure for consistent water flow.Fit for long row plants and drip watering individual plants.The water flow is 2L/H or 4L/H or 8L/h of the dripper. this is a common size used on water filter systems, water coolers, and so on.Products using the new high-quality plastic, stable quality, can use for a long time. It is widely accepted by users.Package Included:please double check what we marked in the picture