A useful piece of kit but be careful. Before fitting carpets on my boat I tried a sample cut and found it was 4-5mm short of the width required. I telephoned the help line who could not say why at first. They did come back to me to explain that the cut was to allow for stretching the carpet onto the grippers. So if you want to lay carpets without stretching them you need to add 4-5 mm to the cut which I did by fitting a spacer.