This titanium internally threaded cone spike will fit any Industrial Strength brand barbell. The cone spike is made from 6AL4V ELI F-136 implant grade titanium and is countersunk for a precision fit.
For these cone spikes, the base diameter will equal the length.
This threaded end will fit Industrial Strength brand internally threaded jewelry, but may not fit your other brand jewelry if purchased elsewhere (due to possible differences in threading). The gauge of the end must be the same gauge as the jewelry it threads into.