Yes. The 3M DBI-SALA 3500279 Nano-Lok Edge is a twin-leg self-retracting lifeline (SRL) built for ANSI Class 2 foot-level tie-off and leading edge (SRD-LE) applications common in construction, metal fabrication, and oil & gas. Its twin-leg design keeps you 100% tied off as you move between anchor points, and each leg ends in a zinc-plated steel snap hook for standard connection points. It has a 420 lb (190 kg) capacity for one user, meets 29 CFR OSHA 1910.140, ANSI/ASSP Z359.14-2021, and 29 CFR OSHA 1926.502, and ships with free shipping from Industrial Safety Products.

The 3M DBI-SALA 3500279 Nano-Lok Edge meets or exceeds 29 CFR OSHA 1910.140, ANSI/ASSP Z359.14-2021, and 29 CFR OSHA 1926.502. It is an ANSI Class 2 device rated for foot-level tie-off and leading edge (SRD-LE) applications — tested for use where the anchor is at foot level and the lifeline may pass over a sharp or leading edge.

Under ANSI/ASSP Z359.14-2021, Class 2 self-retracting lifelines are rated for foot-level tie-off — where the anchor point can be at or below the worker's feet — and for leading edge (SRD-LE) use, where the lifeline may run over and be loaded across a sharp structural edge in a fall. The 3M DBI-SALA 3500279 Nano-Lok Edge is built for exactly these conditions, common on decking, steel, and construction leading-edge work, and it locks quickly to arrest a fall within inches.

The 3M DBI-SALA Nano-Lok Edge 3500279 is a self-retracting lifeline (SRL) whose galvanized cable pays out and retracts as you move, keeping constant tension so there's no slack to cause dragging, snapping, or trip falls. If a fall occurs, a quick-activating speed-sensing brake locks the line the instant it senses the fall, stopping it within inches — providing more protection at low heights than a traditional lanyard. A high-capacity external energy absorber cushions the arrest.

The twin-leg design of the 3M DBI-SALA 3500279 Nano-Lok Edge lets you maintain 100% tie-off. As you move or change anchor points, you connect the second leg before disconnecting the first, so you are never unprotected in between. Both legs end in zinc-plated steel snap hooks for anchoring, and the unit connects directly to your harness — ideal for moving around structures at height.

Each of the twin legs on the 3M DBI-SALA 3500279 ends in a zinc-plated steel self-locking snap hook — a standard-size safety hook for connecting to D-rings, anchor points, and connectors that fit a conventional gate. The harness end uses a stainless steel single-pin connector that mounts directly to the back of most harnesses. The steel snap-hook configuration also makes this the lightest of the 8 ft Nano-Lok Edge twin-leg models, at about 7.1 lb.

They are the same 8 ft twin-leg Nano-Lok Edge SRL — ANSI Class 2 leading edge, 420 lb (190 kg) capacity, galvanized cable — and differ only in the leg-end connector. The 3500279 has standard zinc-plated steel snap hooks; the 3500280 has large aluminum rebar hooks; the 3500277 has aluminum rebar lock hooks; and the 3500276 has steel rebar lock hooks. The hook style affects both which anchor points you can attach to and the unit weight — the 3500279 with its compact steel snap hooks is the lightest at about 7.1 lb. Choose the snap-hook 3500279 for standard D-ring and anchor connections; choose a rebar-hook model for large structural anchors like rebar and beams.

Yes. The 3M DBI-SALA 3500279 Nano-Lok Edge is a Class 2 SRL designed for foot-level tie-off, where the anchor is at or below your feet and fall clearance is limited. Its speed-sensing brake locks quickly to stop a fall within inches, and the high-capacity external energy absorber limits arrest forces — together providing more protection at low heights than a traditional shock-absorbing lanyard. It is for industrial and occupational use only.

The 3M DBI-SALA 3500279 Nano-Lok Edge has a high-capacity external energy absorber that cushions and limits the forces on your body during a fall arrest, plus a built-in impact indicator. The impact indicator provides a clear visual sign that the SRL has been subjected to a fall, so a supervisor or competent person knows to remove the unit from service and inspect it.

Yes. The 3M DBI-SALA 3500279 Nano-Lok Edge has a built-in stainless steel single-pin connector that mounts directly to the back of most harnesses, so no separate connector is needed. Its compact, ergonomic nylon thermoplastic housing is worn on the user's back, and the twin-leg unit weighs about 7.1 lb (3.22 kg) — the lightest in its 8 ft series. It ships with free shipping from Industrial Safety Products and is intended for industrial and occupational use only.

The 3M DBI-SALA 3500279 Nano-Lok Edge is RFID equipped, meaning it has a built-in radio-frequency ID tag compatible with inventory-management systems. Safety managers can scan the SRL to log inspections, track service history, and manage their fall-protection equipment inventory, helping keep gear compliant and up to date.

The 3M DBI-SALA 3500279 Nano-Lok Edge has a weight capacity of 420 lb (190 kg) and is rated for a maximum of one user, per 3M's specifications, which covers the worker plus tools and equipment within the rated range. It is a personal twin-leg SRL with an 8 ft galvanized cable lifeline and about 5 ft of working length, and the unit weighs about 7.1 lb (3.22 kg).