"These Portable Winch Polyester Slings fastens the Portable Capstan Winch or a snatch block to a tree, providing a secure anchor without damaging the tree. U.S.A. Application Sling, Capacity lbs. 6,400, Length ft. 8, Rope Size L x dia. ft. x in. 8 x 2, Works With Portable Capstan winch. Does not stretch Very useful for lifting or being used as a choker 3200-lb. vertical working load 2500-lb. working load when used as a choker 6400-lb. working load when used in a U shape"