Yes I got the double telescoping booms, the black ones. All but one of the threaded knobs are metal, I forget witch one, and the boom is a little shorter than expected but if you extent a boom too far the whole thing is too off balance anyway.The hight is adjusted with a knob instead of a twist thing but again I think this is actually easier to adjust. The pics look kinda like the cheap ones but when you pick it up you can tell it's not a cheap stand. 6 are very heavy. The main thing is in use these stand are very stable better than my cheap tripod or round base stands.
Honestly I was about to buy one dr stand because I was about at the end of my rope with my cheap stands and I got 7 of these(locally) for a little more than I was about to pay for the dr. these gave me what I was hoping to get from the dr. I'm not afraid of my stands bending in transit anymore like I was with my cheap tripods and these are stable as heck. Oh and I'm not sure why but it just seems easier to adjust these than anything else I've used.