3M DBI-SALA Nano-Lok Self-Retracting Lifeline (SRL) with Anchor Hook is designed for ease of use and is ideal for direct connection to most harnesses. Focusing on strengthening the worker's comfort and safety as the highest priorities, 3M DBI-SALA Nano-Lok Personal Self-Retracting Lifeline with Anchor Hook combines lightweight design with industrial-strength durability and function.