A simple knot used as a stopper at the end of a fishing line. The knot is a three-loop knot. Its design is such that it provides maximum resistance. It is used when it is necessary to weave a fishing line with a leash into another knot, for example, in [Snake knot for leash](https://fishplanetapps.com/apps/fishing-knots/knot/knot-1426) or in [Simple Leash knot](https://fishplanetapps.com/apps/fishing-knots/knot/knot-425)