Make sure to choose the correct option for you use case.
Stock XR battery box and ELM/AV box use m20x1.5. ELM box does not require a rear locking nut while the stock XR battery box does require the rear locking nut.
For torque box either m20x1.5 or PG13.5 can be used, but PG 13.5 is a much tighter fit and requires threading directly into