The ring did not fit the Beam Vaccuum cylinder perfectly. Had to remove the ring from the old bag and remove the ring from the new bag and sew the old ring into the new bag. Works fine now.
It would be good to have some instructions included on how to install this. It turned out that I could "fold" the steel band in such a way that it was pretty easy, but it took 10 minutes of expermenting to figure that out. The bag is a perfect fit, though.
Fit and finish good. Easy to install.
Appears that this bag caused some performance loss over the original equipment bag.