All parts and pieces of the CROSSFIRE™ Burner are made from brass. Unlike other burners made from stainless steel, brass is corrosion resistant and will not rust, which eliminates the need for replacement.
CIRCLE TREE-STYLE CFBCTL120
Recommended parts:

CIRCLE TREE-STYLE CFBCTXL120
Recommended parts:

CIRCLE TREE-STYLE CFBCT240
Recommended parts:

CIRCLE TREE-STYLE CFBCT440
Recommended parts:

How to Choose the Right Fire Equipment
Warming Trends Full Catalog
Owner’s Guide and Instruction Manual
Brass Burner Compatibility Chart
Gas Pipe Size and BTU Supply Chart