EGO 15" string trimmer mount and includes a clip to hang the package for replacement string.  This is for the original string trimmer and doesn't really fit right for the newer versions of the string trimmer.  They will work, but the mounting point is larger.  I have been using this for about a year and a half with no issues.

Printed in PETG with 4 perimeters and 35% infil (gyroid).  Simple print.  No supports needed.