This ingenious tool is a must have for hobbyist auto body painting or sandblasting. Three different principles that work collectively, allows for very dry compressed air. Dries air from a 5 hp 80 gallon compressor running non stop, for media blasting. Acute pressure drop Acute temperature drop Air drying pellets If you do auto painting or heavy continuous media blasting, you can appreciate the efficacy of such a unit. Wired for 220v but could be reconfigured for 110v. This price is well below what it cost to make. Does need one or two new airline couplers and new air dry pellets. In sooke.