Description DETAILS:Thread Size: M14 Hex Size (in): 13/16â Thread Reach (in): 0.750â Center Electrode Core Material: Copper Approximate Resistor Value (Ohm): 5000 Ohm Service #: BR9EIX Unit of Measure: Each: Seat: Flat Heat Range: 9 Present Gap (in): 0.030â Number of Ground Electrodes: 1 Center Electrode Tip Material: Iridium Insulator Height (mm): 55mm