The Ladder Hook Extension Strap allows the rescuer to attach themselves to a ladder rung. Overall length of 18" provides the perfect length to give the rescuer both comfort and safety. Made with 6,000 lb Nylon webbing and sewn with contracting color Polyester thread. Nylon is flame-retardant. Easy to operate double locking snap hooks are located at each end of the strap. The XL hook on one end will open to 2.5" to accomodate any ladder rung. The small end of the Ladder Strap Extension attaches to the "D" ring of the rescue harness. Strength: 5,000 lbs.