The Vulcan Hart 00-719255-00012 Red Knob is a burner valve control used on compatible commercial cooking equipment. It features a D-stem configuration with the flat positioned downward and includes a set screw for securing the knob to the valve shaft. The red finish provides quick visual identification of the burner control on the appliance. This knob allows the operator to adjust the... https://partsfe.com/knob-red-wset-screw-for-vulcan-part-00-719255-00012