Flange Alignment Pins

Sometimes flange bolt holes just aren't quite in alignment. You can see part of the hole in one flange through the other flange but you can't get a bolt through for bolt up. If you can get one of these alignment bolts through both flanges then by turning the pin,  you can get closer to getting a bolt through. If you add the second pin then turn it then you most likely be able to complete the bolt up.