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See below reference chart for specs:
| JR9B: | 18mm Hex | 19.00mm Reach | 0.7mm Gap | 2.5mm Nickel Electrode | Threaded Stud | Resistor: Yes |
| JR9C: | 18mm Hex | 19.00mm Reach | Multi-Ground | 2.5mm Nickel Electrode | Threaded Stud | Resistor: Yes |






































