It's an extra mount, suitable for your so-called "extra" smoker or grill.

Giant Grill Gauge Display attaches to it magnetically, summoning the temperature from that grill, as well as gathering information from any Predictive Thermometers inside or around that grill. 

Includes:

• Heat Shield (10mm aerogel) or Heat Deflector (2mm aerogel) mount
• Sensor tube
• Spring clip
• Locking collar

Does not include: Giant Grill Gauge Display