Edging Guide for Straight Shaft Echo Trimmers, For High Torque Gearbox Echo Trimmers (With a T in the 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 Note: this is for High Torque Gearbox Echo trimmers (these have a T in the model number)