Not even a ‘ProMecha’ by name but the rubber grip version of the SP-500 series is actually one of OHTO’s most solid and reliable designs.
I think the Needle-Point is unknown to me. Is the grip also kind of rubber or metal?
The grey grip on that needlepoint BP is rubber. This is where the inconsistency of OHTO infuriates. The rubber grip MPs were in black with black grips. The only black needlepoint pen at that time was the knurled FLAT-C. Any black knurled MP? NOPE