3M dbi-sala 3500231 nano-lok edge twin leg self retracting lifeline, 8’l, 310 cap lbs3500231 nano-lok edge is specifically designed for foot level tie-off and sharp edge applications often found in construction. It 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 numerous models to choose from to suit almost any application. Nano-lok locks quicklystopping a fall within inchesproviding more protection at low heights. In addition, tension is always kept on the lifeline, which reduces dragging, snapping and trip falls. Both features are key safety improvements. Designed for foot-level tie-off and sharp edge applications twin-leg 100% tie-off design built-in connector for twin-leg srl direct attachment to harness 8 ft. 2.4m twin-leg lifelines with 3/16in 5mm galvanized steel cable lifeline aluminum rebar lock hooks on each lifeline extremely compact, lightweight design tough and impact resistant thermoplastic housing swiveling anchorage loops quick activating speed sensing brake systems integrated backpack style energy absorber