|Table of contents|
2 Variant Names
5 Related knots
alpine butterfly knot.
butterfly knot, lineman's loop (Ashley).
Unknown%.Compared to other knots that might be used for the same purpose it is stronger (does not reduce the strength of the rope by as much).
None, secure if wet.
Climbers and mountaineers use it in order to tie on in the middle of a rope; they also use a double figure-of-eight knot for this purpose.