This Tri - Clamp Thermowell is perfect for those who need to monitor temperature in tanks. Brewers, laboratory technicians, and industrial workers will find it very useful. Just insert the thermal probe from your controller and get quick temperature readings. It has a 1.5' Tri - Clamp end cap and a 6 - inch probe that mounts into a 1.5' Tri - Clamp ferrule on the side of your tank.