Usually the link between line and leader, snap swivels can play an important role in allowing for a quick change of rigs and lures while keeping twists and kinks out of everything between man and fish.
But snap swivels come in many designs, sizes and breaking strengths and too often mistakes are made when choosing the right one to use for the particular type of fishing that’s being done at the time. There is no “one” snap swivel that will work for all angling situations, and fishermen who make the mistake of using the wrong one at a critical time could end up losing the fish of a lifetime.