This nozzle allows you to use a small, empty plastic bottle as the Floater instead of having to 3D print one. Once attached, it performs the same function as the Floater, regulating the water level and flow of water from the nutrient solution bottle. 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! Want to know how much it would cost to print this part? Visit https://www.3Dprintler.com and compare prices from today's top 3D-printing services. 3D Printing Settings: -Low quality; 0.2 mm; 2 shells; 10% infill Tested on MakerBot, Ultimaker, M3D Micro and Formlabs