Edging Guide for Straight Shaft Echo Trimmers (EXCEPT ones with a "T" in Model Number) Converts trimmers into a walk behind edger for fast, clean edges everytime 14-inch revolving disk replaces the trimmer shield Guide rolls down edges - Places and holds the trimmer string in the best position for crisp, clean edges Operates with standard tap-n-feed trimmer heads Fits all Echo trimmer models EXCEPT those with a "T" in the model number