Hatch Premium Braided Backing has the touch and feel of Dacron combined with the strength and diameter of Gel Spun. Hatch Backing is constructed of a single 8 braid PE line. Use in fresh water or saltwater fly fishing applications. The diameter of the line determines how much backing builds up on the arbor of a reel, not the pound rating. So, a single diameter line can be used effectively in all fly-fishing applications – fresh or saltwater. 100 Meter Hatch Backing LENGTH- 100mDIAMETER- .015″ / 37mmSTRENGTH- 68lb / 30kgCONVERSION- 100m = 108 yardsIDEAL FOR1 Plus, 2 Plus, 3 Plus , 4 Plus & 5 Plus Reels 200 Meter Hatch Backing LENGTH- 200mDIAMETER- .015" / 37mmSTRENGTH- 68lb / 30kgCONVERSION- 200m = 216 yardsIDEAL FOR7 Plus and 9 Plus Reels 400 Meter Hatch Backing LENGTH- 400mDIAMETER- .015" / 37mmSTRENGTH- 68lb / 30kgCONVERSION- 400m = 432 yardsIDEAL FOR11 Plus and 12 Plus Reels