The lifting sling is an accessory to a winch puller or chain block, making it easier to lift heavy and awkward loads. The 1" x 8' Nylon webbing has a special red core that when visible indicates excessive wear, an important safety check. The safety factor is 5 to 1 as required by OSHA. There are three basic sling hitches that allow the sling to lift up to 7,600 lbs. Weight: 1 lb.