This life safety line the first tree job we used. It was attached to the safety harness that I bought from Vevor as well my worker slipped fell 10 feet safety line and safety harness caught him from serious injuries.
Purchased this assembly to complement my new harness! Have a 12/12 roof- this is a must-have for that kind of work! The rope is easy to handle & the slide/ lock works well. They also have a 100 ft version.
So I bought every size of these that was offered, however I have no idea how you are supposed to set it up in the tree, have even searched YouTube hoping to find a video to no avail. So hope you are smarter than me!