re: String trimmer line

I think the manufacturer sets the line weight for the designed string length and engine RPM/load.

I have always owned cheapie lightweight straight shaft string trimmers, like homelite, weedeater, mtd, etc., all with smaller displacement 2 strokes like 25cc, that want 0.080" string. Pay around a hundred bucks, use it for 3-4 years, then get another.

I like the green star shaped .080 line the best. It lasts way longer even around chain link fence and edging the driveway.