The Fermtech ProFiller is a relatively new product on the market with a few improvements that make it superior to traditional bottle fillers. Its design allows faster filling of bottles over traditional bottle fillers, filling around 20% faster. It is designed to adjust to any size bottle with any sized punt without reducing flow. The ProFiller has a flow control clip as well, and the barbed fitting makes connection to tubing a breeze. We recommend either 3/8" ID tubing, but 5/16" will work as well.