I bought the 5 inch a few years back and due to various things I never installed it until recently. When we were through, we looked at the outside of our cobblestone walkway and the old plastic edging curled over time under the cobbles. Well Lets get more edging as the flower beds look so so good. We opted this time for the 3 inch due to it abutting our lawn, and we did not want the riding mower to the miss grass or be hampered by a taller one. We just began adding them and it is so easy but we got side tracked by weeds, they are gone now, and wow it is looking so nice. I might just have to buy more for along my front, as the grass begins growing into the landscape. It is a more [permanent way to make your home look great, and if you get scratches you can spray them with matt black paint, and boom , new again. Great company, fast shipping , a rubber mallet with work really well to help install.