3M DBI-SALA 3101468 Nano-Lok Personal Self Retracting Lifeline, Single-leg, 6 ft. (1.8m) of 3/4″ (19mm) Dyneema fiber and polyester web and aluminum locking rebar hook on leg end, speed connector for harness mounting. Nano 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 worker’s 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 harness, there are more than 30 models to choose from to suit almost any application.