Tri-clamp fittings, also known as tri-clover fittings, are commonly used in professional brewery settings due to the sanitary connection made by using a gasket and clamp to connect two fittings together. These fittings can easily be broken down for cleaning and sanitizing, and do not contain any tricky threads where dirt and bacteria can hide. This particular fitting is a 1.5 in. tri-clamp cap that has a 4 inch total length thermowell probe (3 inches inside the tri-clamp connection) for use with a temperature gauge or sensor. These thermowells have an ID of 3/16" (0.175) for electronic temperature sensors. Tri-clamp fittings make it easy to quickly break down your brewing setup for cleaning and sanitation. Get on board with tri-clamp fittings today!