This burner orifice is a 9.5K natural orifice. The orifice helps regulate the gas flow coming from the burner valve. The size of the orifice opening determines the max power output of the burner. If the opening of the orifice has been damaged or you are converting the range, you will need to replace the orifice. Please remember to disconnect the power and gas supply before starting your repair. This part is made of metal, is a genuine OEM part and sold individually.