3M DBI SALA Nano-Lok 2m Single Leg Hot Work Use Web Self Retracting Lifeline with Snap Rebar Hook 3101522Nano Lok is ergonomically designed for ease of use and is ideal for direct connection to most harnesses. The extremely compact and lightweight design is virtually unnoticeable on your back, staying out of the workers way and making it ideal as a lanyard replacement. Whether your application requires single or twin leg configurations, mounting to an overhead anchor or for connection directly to a harness, there are a variety of models to choose from to