"These Polyester Slings from Portable Winch fasten the Portable Capstan Winch or snatch block to a tree without damaging its bark or cambium. Sling will not stretch and can be used for lifting or as a choker. U.S.A. Capacity lbs. 6,400, Application Sling, Length ft. 10, Works With Portable Capstan winch. 3200-lb. vertical working load 2500-lb. choker-style working load 6400-lb. basket-style working load"