The MSA V-SHOCK EDGE is a leading-edge rated self-retracting lifeline (SRL) built for work at heights where sharp edges or unprotected edges are present. It uses a 5.5 mm galvanized steel cable, retracts automatically as you move, and locks fast if a fall occurs. Rated for a single user up to 310 lb, it meets ANSI Z359.14 and applicable fall-protection regulations.