A closed-end 304 stainless thermowell on a 1.5" tri-clamp port, 152 mm (6") long for deeper reach into your tank. Your probe sits inside the well, surrounded by steel, not beer — accurate, sanitary readings, and you can pull or swap the sensor any time without draining the vessel.
Key points
152 mm (6") length for deeper tanks
Fits probes under 6 mm diameter — RAPT Pill, digital controllers, thermometers
Probe stays dry — swap sensors without opening the vessel
