For use with chain saws to pull up to 4000 lbs. on a single line pull. Comes with aircraft cable and all the adapters to fit almost any chain saw engine, including the direct connections as well as the short bar and cutterless chain. Attaches as easily as changing a chain saw bar. A 3 HP engine will create about 2000 lbs. of pulling power; a 67 HP engine generates up to 4000 lbs. of pulling power.