The TA2XX0180ADD2S - Dual Element Type R Thermocouple includes a ceramic protection tube with a snap lever aluminum head with a block.
The Dual Element assembly to allow for control and remote transmission of temperature data. This design also allow you to have 2 sensors in a single location giving you 2 points of reference to help safegaurd agains one element failing.

The ceramic protection tube is rated up to 3400°F and crafted out of 99.8% Alumina, attached to the top is a Aluminum Thermocouple Head Assembly with a dual Element Terminal Block for easy instrument attachment. The snap Lever design allows for quick and easy access to the terminal block for quick maintenance.

Specifications:
Thermocouple Type: R
Element Style: Dual
Wire Gauge: 24 AWG
Internal Insulator: 4 hole Alumina insulator

Thermocouple Head Part Number: H-BUZ-1212
Thermocouple Head: 0.5inch Process connection, 0.5inch Instrument connection
Terminal Block Part Number: HTB-N4PC - Dual Element
Terminal Block: 4 pole round ceramic block

Protection Tube Material: 99.8% Alumina