Three length variants that cover every form field you will meet.
Every form wants a different length of the same paragraph. Write three, in one place, and submissions become copy-paste.
Two sentences: what it is and who it is for, then the outcome. Everything shorter is a cut of this.
The 160 loses the second sentence. The 60 is the category noun plus the qualifier.
Used by directories with a description box. Three short paragraphs: problem, what the product does, who it suits.
One note with blurbs, image files, category tags and your submission log. This is the kit you open for every listing.