"When I first applied it to a double glazed unit that weighed about 35 kg it didn't grip when I applied the suction cups, then well I tryed again using moderate but less pressure, it worked and it's easy once you get used to it. So I recommend it to DIY, trade and all window fitters!"
"I have never handled glass before and my first ever task was to fit a large sheet of 4mm. This would have been impossible without this gadget - once I figured out how to use it properly as it did not come with instructions or warnings. Firm pressure is reguired before setting the suction and on a large wobbly pane this was quite tricky."