The Constrictor is also great as an end loop, a midline loop and as a stopper. It can also be easily tied with one hand, with the fingers as the mandrel and then slipped into place in it's traditional role, as a binding knot or can then be adjusted to one of the two loop configurations. It can also be used as a sling shortening device which is easily adjusted but is failsafe when positioned. Let's see 5 uses and tied by at least three different methods... Pretty good little knot.