Large Big Green Egg, Weber Performer Deluxe, Weber Smokey Joe Silver, Fireboard Drive, 3 DigiQs, lots of Thermapens, and too much other stuff to mention.
Bought one of these for my BGE, no reason it wouldn't work on any other round charcoal device. It works really well; grease still atomizes and goes into the coals, creating that great charcoal flavor, and the flat side of the griddle sears the entire patty (or steak) for that Maillard reaction. Good stuff. Google and pick your store.