Version 3 of the Drip Emitter is an upgraded version of V2. It is used to drain excess water from pots that have a hole at the bottom. It fits snuggly inside the hole--all you have to do is snap it into place. For an extra secure seal, you can use silicone around the edges. You can then connect a long piece of tubing to the end of the Emitter and direct it into a large container or reservoir, which will collect the excess water. It has a thicker nozzle, which allows for a better fit with the flexible tubing. This version of the emitter has wings that give you a better grip. Know how to make this part better? Have ideas for new parts? Visit our website (https://www.3dponics.com) and join our Google+ community (https://plus.google.com/u/0/communities/111638904033818784260) to take 3Dponics to the next level!