Cordless String Trimmer Edgers for Lawn Borders

It depends on the design. Some models rotate the trimmer head and use a wheel to guide edging; attachment-capable systems connect a separate edger tool to a compatible power head. Follow the specific manual for conversion.

No. Some are trim-only, some convert, and others need an accessory. Look for an explicit trimmer/edger feature or compatible edger attachment in the manufacturer documentation.

A combo tool can maintain grass borders alongside a sidewalk when its instructions allow edging mode. Keep the line and head clear of people, vehicles and loose stones, and use the supplied guard.

The cited Greenworks page is for a tool-only version. Check the product code and included-items list because battery-included bundles are separate listings.

A wider path can cover more grass per pass, while a narrower one may offer more control in tight borders. Compare the maker's stated width with the size and layout of your yard.