Rio Gelspun Flyline Backing

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Rio Fly Line Backing - Gel Spun

Ultra strong, super thin, GSP (Gel Spun Polyethylene) backing in white, with zero stretch.

  • Ideal for anglers who need more backing than their reel can normally hold
  • Zero stretch cuts through water with little resistance for pelagic species
  • 300yd spools
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Breaking StrainNo