The Mix Stir is an effective de-gassing and mixing device for brewing at home or on premises. The function of the mix-stir is to remove excess carbon dioxide (CO2) trapped within fermented wine. This ensures superior product quality. The MixStir is 24" long. This is longer than other models. The extra length is perfect for large primary fermenters, barrels, as well as glass and plastic carboys. This new & improved design is manufactured with high quality polycarbonate, ABS blades, as well as a longer, stainless steel insert. Attach to any electric hand drill and the blades act as a turbine for maximum mixing and stirring efficiency.