3M DBI-SALA 50′ Red Rebel Self Retracting Lifeline With 5mm Galvanized Cable, Thermoplastic Housing And Carabiner offers an economical fall protection solution. It provides 420 lb capacity and housing design allows for stacking on work surfaces. Swivel hook limits lifeline twisting, ergonomic cable handle offers added comfort and side cable exit enables smooth operation. Impact indicator offers visual indication of fall arrest and self-locking snap hook automatically closes and locks for added safety. This lifeline is used for commercial, residential construction, refinery maintenance and manufacturing industries.