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For fishing deep pools, fast current, or cold water, Scientific Anglers® UST Sink III/Sink IV Double-Density Sinking Fly Line is ideally configured to to get down quickly and put your presentation in the strike zone. It features an extended Scandi head with a short rear taper for quick rod loading and change of direction, and a long front taper to help small flies cut through the wind and travel farther. Designed for use with both conventional and poly leaders, UST III/IV incorporates Scientific Anglers' slick Advanced Shooting Technology coating and exclusive Mastery Texture micro-dimpling, to reduce friction through the rod guides and enable easier pickup at distance. Includes SA´ID line identification system and welded loops at both ends.

  • Gets down quickly to put your fly in the strike zone
  • Great for deep pools, fast current, or cold water
  • Double-density Scandi head
  • Short rear taper for quick rod loading
  • Long front taper for distance and wind remediation
  • For use with both conventional and poly leaders
  • Advanced Shooting Technology coating
  • Mastery Texture micro-dimpling reduces friction
  • SA´ID line identification system
  • Welded loops at both ends
Web ID: 2300986