[1] It is useful when the friction hitch needs to be reset quickly or often or made to be self-tending as in crevasse and self-rescue.

Grabbing hold of the carabiner will release the friction and allow the hitch to slide freely and thus be moved appropriately.

To remove the Bachmann hitch, just unclip the top loop, hold on to the carabiner and pull the cord free.

This knot is frequently tied using a sling made from 1" tubular webbing.

There are a limited number of applications that involve repeated shock loads to the knot and in these 4 wraps are usually sufficient.