My garage is next to my neighbour's and hence has no electric power so I have to run a cable from an outdoor socket at the front of my property, across the shared drive. These 'ramps' are strong and robust and the 'groove' to slot the cable in is wide and deep enough for a hosepipe too - which is a bonus. I store them in the garage when not in use - not sure how the rigid plastic would stand up the the rigours of our British weather (no sign of any cracks after several months of use). They offer great value for money (three of them for the same price as one, as offered by several other companies).I would definitely recommend.