The Blichmann ThruMometer In-line Thermometer is a great way to know the temperature of your wort while it's being transferred. Very helpful when using a counterflow or plate chiller to read the temperature of your wort going into the fermenter. Made of heat-treated highly corrosion resistant aluminum. Reads from 58F - 88F, and has 3/8" in and out posts. Note- Clean with mild detergent only, using warm (no hotter than 140F) water. Do not soak in the same bucket as other metals, as this could result in galvanic corrosion to the aluminum. After use, dry thoroughly and store in the protective plastic tube.