Scientific Anglers Sonar Uniform Sink - Graduated Density Full Sinking Fly Line

EUR €69.00
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Scientific Anglers
The idea behind the graduated densities of the SONAR Uniform Sink sinking fly line is a brilliant one: instead of a single density that can sink at an uneven rate due to the fly, the front of the Uniform Sink lines sinks faster than the rear, all but guaranteeing a straight-line connection to the fly. In stillwater and lake fishing situations, this is a must-have, non-negotiable, fish-catching attribute.

  • Front of fly line sinks slightly faster than rear, ensuring straight-line sinking
  • Sink Rates:
  • Sink 2 = 1.75 2.75 ips (5-7 wt.)
  • Sink 3 = 2.5 3.5 ips (5-9 wt.)
  • Sink 4 = 4.0 5.0 ips (5-9 wt.)
  • Sink 5 = 4.5 6.0 ips (5-9 wt.)
  • Core:
  • 5-wt. = Monofilament
  • 6-7 wt. = Braided multifilament
Part Code

Delivery Information

*All displayed ship dates are dependent on stock status.

DHL - From €14.5

> Shipping within the United Kingdom | 1-2 days.

> Shipping to the Republic of Ireland | 2-3 days.

> Shipping to EU Countries | 4+ days.

> Shipping to the Rest of the World | 5+ days.

> All orders with a value greater than €70 ship with DHL to insure it's safe arrival.

Royal Mail - From €12.50

> Express shipping within the United Kingdom | 1-2 days.

> Priority shipping within the United Kingdom | 3-4 days.

> International shipping | 5+ days.


Talk to an Expert

Here at Serious Fishing we are always delighted to talk to our customers. While we hope that we will be your preferred retailer of fishing tackle, we also hope to become firm and trusted friends with many of you.

When you're making a major purchase of a new rod, reel or waders, a bit of advice can be very reassuring. We will usually work in a bit of extra value for you as well.   

Our team of fishing experts includes Neil, Tom and Trevor. You can reach any of us by sending a quick email to Please include your phone number if you'd like us to call you back. We try and respond within a few hours max. Note: We're based in UK & Ireland time zone. 

We look forward to hearing from you. Tight lines in the meantime. 

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