GAS REGULATING KNOB gives you control over flame size; AIR SUPPLY REGULATOR RING allows you to achieve an even BLUE flame. DURABLE & RUGGED DESIGN - made of sturdy and durable cast iron material, and built to last; 1-Year Manufacturer's Defect Warranty; 0-20 PSI Regulator and 4-FT hose included for use with a BBQ propane tank (QCC1 Type-1 Valve)