The Uni Knot (or Grinner knot) is a versatile, high-strength fishing knot used to attach fishing line to hooks, lures, or swivels, or to join two lines together. It is popular for its reliability, ease of tying, and suitability for monofilament, fluorocarbon, and braided lines. It is often regarded as an essential, all-purpose knot.
The primary disadvantage of the Uni Knot is that it requires more line to tie compared to others like the Clinch Knot, which can lead to significant leader waste when changing lures often. While generally strong, it is also bulky, making it less ideal than the FG knot for passing through small rod guides, and it requires careful tightening to prevent heat damage on monofilament
