The heading on this item is misleading (loss of 1 star for that) you do not get 5M of edging you get just over 2M.
The edging itself is smaller than I expected - this is mostly my fault for looking at the pictures and not reading the sizes included in the description - rookie mistake as the pics are slightly misleading - anyways size wise they are just over half a house brick in height and about a brick in width. They clip together easily and look straight and fine until you get to put them in the ground - they have plastic flat stakes on them which buckle rather easily and as your fighting to get them into the ground - well if you have stony ground like me - the nice tidy line also buckles and moves.
Once in position they are fine and look decent - yes they dont look particularly like stone and are obviously plastic but they dont look bad or tacky - I actuually think they make the edging of the "flower" bed (in our case a strip of pebble covered ground with some plant pots by the path) quite tidy - obviously this is looking front on to them - if your looking at them from the back or side on then they dont look great.
They have been outside in wind and rain for a while without getting damaged and they look like they are there for the long haul.
Overall not bad value for the price - I would recommend just read the details on the sizing and the amount of coverage carefully rather than relying on the headline or images