Step up to the ease and convenience of an auto siphon and you'll never siphon the old-fashioned way again. Auto siphons make it a breeze to transfer your beer from the fermenter or carboy into bottles or even a secondary fermenter. This model from Fermtech is made of plastic, starts your siphoning with a single stroke, and is designed for ease of use. Brewing good beer isn't easy. But if you use the best equipment, like the Fermtech Auto Siphon, you're sure to get the best results you can. In stock and ready to ship. Features: Made of plastic. Designed to start with a single siphon stroke. Easy transfer of beer from fermenter to bottles. Disassembles for cleaning. Specs: Siphon Dimensions: 3/8" Diameter. Uses 5/16" vinyl tubing.