Description DETAILS:Thread Size: M10 Hex Size (in): 5/8â Thread Reach (in): 0.750â Center Electrode Core Material: Copper Approximate Resistor Value (Ohm): 5000 Ohm Unit of Measure: Each Seat: Flat Heat Range:9 Preset Gap (in): 0.032â Number of Electrodes: 1 Center Electrode Tip Material: Nickel-Copper Alloy Insulator Height (mm): 50mm