TerraEdge is our plated/galvanized lawn edging. For this product, we provide a protective coating so the material does not rust over time. We have it in 4-inch and 6-inch pieces. RawEdge is our unfinished, steel lawn edging that will patina (rust) with time. This is available in 4-inch and 6-inch pieces. PerfEdge is perforated, galvanized steel lawn edging that allows for drainage. It is available in 4-inch (Galvanized) pieces in our Homekit.