Comments about DeSisti Accessory Holder for Pinza 500, Cosmobeam 1K, 650:
I got this piece for a Cosmobeam 650. There's not too much to say about it, but it's basically a must-buy if you're going to get any of the compatible light fixtures. You'll need it if you want to put barndoors or filters in front of the fixture. My only complaint is that it's a little bit pricy for what it is, and that it probably should be included as a stock accessory with the light fixtures.