Kawasaki ZX7RR WSBK type titanium chain adjuster bolts
These are chain adjuster bolts for a Kawasaki ZX7RR, but not just any old Kawasaki ZX7RR, one thats got an ex WSBK swinging arm in it and i suspect a shed load of other WSBK bits as well.
Studs like this can be tricky to make when there is no plain shank in the middle to hold on to whilst cutting the second thread, these are a bit better (not easier note!) but better as they have a collar, so when i’d made a holder for them the collar screwed up against it and held it more firmly than without. They have a 4mm socket in the end to make the adjustment.