Worked like a charm in pulling off the glass screen of our 24 inch iMac intel computer to replace a hard drive that had failed after 4 years.
I think this one is better than the two single suckers recommended in the Youtube instruction videos, for you can pull with one hand, and hold the computer down with the other. I was surprised how easily the glass screen pulled off. Apparently it is held in place by magnets and positioning dowels. Pull at right angles to the screen so as not to bend the positioning dowels.
Now I have to find somewhere to keep this sucker until I need it again, perhaps to replace the DVD reader or the clock battery when they fail.
PS - I tried it on the smooth Formica covered computer desk too. It lifted that and it must weigh 30 kg.