Используется что бы
связать типпет ( tippet ) с концом лидера ( leader
) Простой и более крепкий чем barrel knot.
Use to tie tippet to end of leader or for the finer sections of tapered leaders.
Quicker and stronger than the barrel knot. Better that the barrel
knot for joining pieces of leader material that differ by more than .003" in
diameter.