Wire rope logging chokers from WoodlandPRO. FSF logging chokers are commonly called skidding chokers, because they are often used in the logging industry with skidder winch. FSF logging chokers consist of a ferrule on one end, a choker slide, and a ferrelu on the other end. They are easy to set around a log, and one ferrule is usually set in a winchline hook. FSF logging chokers are usually run in groups of 3 or 4, and are commonly used in Eastern hardwood forests. Logging chokers are not legal for overhead lifting.