Knots/Stopper knots/Overhand knot

The overhand knot is a very simple knot. It jams very easily, so you may want to use an overhand knot with a draw loop.

Overhand knot
The use of two overhand knots, one used as a stopper.
NamesOverhand knot, Thumb knot
ReleasingExtreme jamming
Typical useFishing, climbing, shoelaces, making other knots.
CaveatSpills if the standing part is pulled forcibly in the wrong direction