The Double Uni or Uni to Uni Knot is used in salt and freshwater fishing to join two lines with different strength ratings, or two lines with similar ratings.
Blood Knot VS. Double Uni Knot Strength Contest
If using braided fishing line, do I tie directly to a Rapala hard
The Uni-Knot Is The Most Versatile Of All Fishing Knots
Double Uni Knot: 8 Steps to Tying the Double Uni Knot
Double Uni Knot: 8 Steps to Tying the Double Uni Knot
Double Uni Knot braid to fluorocarbon leader
What Knot To Know: The Fishing Knot Guide - JS-Outdoors
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How to Tie a Double Uni Knot
Tie a Knot
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