Part of the EasyDrip System, pack of 100 at a discounted price.
These easy to use Take-Apart drippers have a small locking cap that can be removed for cleaning the inside of the emitter. Where the flag end is, indicates where the actual drip emitter is (where water exits the system). While the barb on the other side is the inlet, where you use the hole puncher to plug into your supply line.
Great for low pressure systems!