The kit includes four-piece accessory pack:heavy stainless steel chamber, thermometer, 15" outdoor pizza stone, 13.5"*16" aluminum pizza peel(Note:In patent application) Fits for Weber Q300, Q320,Q3200 Series Gas Grill Made of highest quality stainless steel with a double-wall ceiling for optimal heat retention.Professional design for oven-style baking Assembles and installs in minutes with no tools.Fast,easy way to bake fresh/frozen pizza Turn your outdoor grill into a professional style pizza oven.So much faster than baking in oven and the pizza come out crispy,not soggy