MSA's patented self-trailing Rope Grabs are designed for fall protection for workers ascending and descending vertical lifelines For use with 5/8 & 3/4 diameter ropes and includes 3-foot lanyard, shock absorber, and hook Part of a complete fall arrest system which typically includes a lifeline, rope grabs lanyard, and OSHA approved full body harness Easy to attach, detach, and reposition at any point on the vertical lifeline Useful for a variety of applications and operations including window washing, protection on scaffolding, powered platforms, boatswain's chair, ladder climbing, construction, general industry and more Durable lightweight stainless steel Color coded for easy identification and rope selection 2 safety ring prevents snap hook roll out Will not damage rope when engaged Retails for $180