3M DBI-SALA Nano-Lok Edge 3500226 SRL, 8', Double-Leg 100 Percent Tie-Off,, Leading/Sharp Edge Swivel Snap Hook, Quick Connector for Harness Mount 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 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 The devices are virtually unnoticeable on your back, stay out of the way and can be easily used as a lanyard replacement 8 ft (24m) twin-leg lifelines with 3/16" (5mm) galvanized steel wire rope and swiveling snap hooks, quick connector for harness mounting