Spike's thermowell features a 1.5" TC on one end and a 1/2" NPT on the other. This allows it to attach directly to the TC fitting on a kettle. The NPT port on the outside allows for the thermometer to be screwed in. It also allows for an optional digital temp sensor to be attached.
Pro Tip:The thermowell can be packed with thermal grease to help temperature response times.
Specs: -1.5" TC x 1/2" NPT-304SS-4” long-.250" ID