New production, top quality stuff. The parts shown should fit nearly all narrowcase frames, to my knowledge. Included as shown:
1ea) 0620-40-010 Swingarm spindle
2ea) 0620-40-320 Swingarm bush
2ea) 0550-91-050 Zerk
1ea) Adjustable reamer (Asian-made, shown collapsed)
Bushings will, of course, need to be reamed to size once installed. Sometimes the frame bore for the spindle needs cleaning up as well. Parts should be 'jigged' to achieve true fit. Know what you're doing, please.