Most fisherman already know this stuff is around and is replacing nylon monofilament, but you may not. I bought this .34mm lineit to make a method of securing my hearing aids against loss. (See: http://www.theultralighthiker.com/securing-hearing-aids/ & http://www.theultralighthiker.com/spots-hunting-adventures-mystery-river-3/) I may well restring my 10 gram handline with it, as its 50 lb breaking strength will make it more suitable for many uses: emergency guylines, repairs etc, and dipped in some Methylated spirits it will no doubt still work well for first aid: http://www.theultralighthiker.com/bcb-fishing-kit-as-good-as-it-gets/