This is an OEM sourced replacement part that is intended to be used with outdoor gas grills from Aussie, Centro, Char-Griller, Charmglow, Ducane, Fiesta, Grill Master, and Turbo. The ignitor uses a batter to create an electric charge that is sent to an electrode that creates an arc that ignites the fuel that is emitted by the burner. This item includes the nut, please note the battery is not included.