This is a Elk River 21911 11' x 1" The FOX web SRL / FI / swivel Zsnaphook / 3.6M Gate Retractable Lifeline. Good used condition. No fraying on webbing. Please have inspected prior to use. 

Substantially built for the highly trained skilled worker. Fall arrest is serious business and the Self-Retracting Lifeline is a serious solution to this demanding application. As the worker moves, it is designed to secure the worker where a fall may occur. 

Dimensions: 1" x 11' 
Material: Nylon Web 
Connectors:  Swivel Zsnaphook (3.6M Gate) 
Features: Fall Indicator