The Bull BBQ (16524) replacement main burner valve for natural gas grills is constructed of durable cast stainless and fits all Bull BBQ natural gas grills (any size). To install, simply detach control panel, unscrew the current valve and replace with new. The valve includes gas valve, ignitor wire, and brass clamp to attach to the gas manifold. Installation takes less than 15 minutes. Sold individually. 24-Inch Bull Grills require three(3) gas valves, 30-inch Bull Grills require four(4) and 38-inch Bull Grills require five(5) main burner valves.