The 3M DBI-SALA Ultra-Lok Self-Retracting Lifeline (SRL) is durable, lightweight, and engineered for safety, efficiency, and reliability. It is available with synthetic rope, stainless steel, or galvanized steel cable lifeline material, and an aluminum or thermoplastic housing. The 3M DBI-SALA Ultra-Lok Self-Retracting Lifeline (SRL) RSQ design is a dual-mode SRL for fall arrest and integrated rescue systems. 3M DBI-SALA Ultra-Lok Self-Retracting Lifelines are available in SRL, Retrieval SRL, and RSQ configurations.The 3M DBI-SALA Ultra-Lok Self-Retracting Lifeline (SRL) extends and retracts with the users as they perform their work task. Should a fall occur, the speed sensing brake system will activate helping stop the fall and reducing the forces imposed on the user to safe levels. 3M DBI-SALA Ultra-Lok Self-Retracting Lifelines represent quality and durable systems that help ensure performance when it is needed the most.