hoist size 4
Preassembled system that allows to lift a load using a force equal to 1/4 of the load.
If used in an inverted position (pulling from the bottom up) the necessary force is reduced to 1/5.
A self-locking device prevents the return of the cargo to its previous position.
Very useful for:
- evacuation from scaffolding
- lifting of rope workers
- recovery from confined spaces using a tripod or a bipod