3M DBI-SALA Nano-Lok 3101278 Tie Off Self Retracting Lifeline, 6', 3/4" Dynema Polyester Web, Swiveling Snap Hooks, Quick Connector For Harness Mounting, Blue A built-in RFID identification tag helps the user record and store information on inspections Allows user to leap-frog while moving from one location to another for added mobility and 100% fall protection There are more than 30 models to choose from to suit almost any application for complete jobsite versatility and flexibility Installs to the webbing of harness, leaving the dorsal D-ring open for other equipment or rescue Designed to provide a snug fit to the worker's back, eliminating nuisance flopping 6 ft (18m) twin-leg lifelines with 3/4" (19mm) Dyneema fiber and polyester web and swiveling snap hooks, quick connector for harness mounting