We have redesigned to suit smaller drill parts for stainless steel vessels. This thermowell is ideal for MKII Temperature controllers or any other temperature probe that needs a 6.5mm probe port. 
We strongly encourage anyone using a Kegmenter, Keggle, Brew Pot, Boiler to install one of these exceptional thermowells. Designed to only take one O-Ring on the inside of the vessel. (Spare O-Ring included).

Looking for the perfect thermometer to fit this thermowell? Try this one!