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- B- Meaning it has a 14mm thread size and a 13/16" hex size
- P- Projected insulator type
- R- Resistor Type
- 6- Position on heat range from 2-12 (2 hottest, 12 coldest)
- H- 12.7mm (1/2") thread reach.
- S- Standard 2.5 mm Center Electrode
- A- Special Design