3M / DBI-SALA® Sealed-Blok™ Self Retracting Lifeline, Retrieval/Bracket, Cable 3400987, 130 ft. (39m) / 3M DBI-SALA® Sealed-Blok™ Self Retracting Lifeline, Retrieval/Bracket, Cable 3400987, 130 ft. (39m) Käyttö ohjeet