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 is clamped onto the end of an open tri-clamp fitting when not in use. 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!