DFP8174 / 8174 GRAB ROPE FOR 5/8" OR 3/4" ROPE Rope Grabs Rope Grabs are designed for a simple three step operation in protecting your workers from falls while allowing maximum freedom of movement Used with independent lifelines for such applications as bos'n chair and suspended scaffolds. A 1/4" or 5/8" synthetic lifeline with a minimum tensile strength of 5,000 pounds must be secured to an anchorage point independent of the work platform itself. The user can move the rope grab up or down the lifeline easily, yet it will lock instantly when activated by a fall. Meets OSHA and ANSI requirements.