Photoflex Telescopic Litedisc Holder - 36-67" (91-170cm)

One would work, but only if you hang the reflector vertically. You would need a light stand on both ends or place a single stand closer to the middle of the arm. I don't think the arm tightens enough to hold it with the stand on one side of the disc, unless you can counterweight it pretty closely. If you want the disc held at any angle other than vertical, then I'd say one definitely isn't strong enough, as the clips are pretty flimsy. I have an older version of this arm (5+ years old) and it holds much better than the one I bought about a year and a half ago. The bracket on the new version doesn't hold very well at all.

The Photoflex Telescopic LiteDisc Holder (870256) is built more for the LiteDisc than to hold accessories. There isn't much to counter balance. There is a 3/8 stud at the back end, and a flush-top 5/8 stud at the front end. A light-weight mike may be able to be attached to either end.