A superior stainless thermowell with a smooth intentional lip so it doesn't slip into your stopper and well-formed end closure, not simply a fold-and-crimp. Works exceedingly well with a two-hole stopper for a thermowell/airlock combination.
Specifications:
To be used with the Ranco Controller, Inkbird or other 0.25in probe. The Johnson Controls probe does not fit the well.