3M DBI SALA Nano Lok Edge Twin Leg Self Retracting Lifeline, 8 ft (3500276) hardwired Comes out of service after oil only Comes out of service after any arrested fall — 3M’s instructions bar return until a competent person confirms in writing that it is acceptable (OSHA 1926 and back of the neck — reducing UV exposure and solar heating for workers in agricultural since standard non edge SRLs and many lanyards are not built to arrest a fall over an edge The 3M DBI SALA 3500276 Nano Lok Edge Twin Leg Self Retracting Lifeline is an 8 ft dual leg SRL built for fall protection work where a leading edge is present and the worker needs to move without ever unhooking