Yes. The 3M DBI-SALA 3500277 Nano-Lok Edge is a twin-leg self-retracting lifeline (SRL) built for ANSI Class 2 foot-level tie-off and leading edge (SRL-LE) applications common in construction. Its twin-leg design keeps you 100% tied off as you move between anchor points, and its aluminum rebar lock hooks connect to structural anchors like rebar while keeping the connectors lightweight. 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 3500277 Nano-Lok Edge meets or exceeds 29 CFR OSHA 1910.140, ANSI/ASSP Z359.14-2021, and 29 CFR OSHA 1926.502. It is rated for ANSI Class 2 foot-level tie-off and leading edge (SRL-LE) applications, meaning it is 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 (SRL-LE) use, where the lifeline may run over and be loaded across a sharp structural edge in a fall. The 3M DBI-SALA 3500277 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 3500277 is a self-retracting lifeline (SRL) whose cable pays out and retracts as you move, keeping tension on the line. A quick-activating speed-sensing brake locks the line the instant it detects a fall, stopping the fall within inches — which provides more protection at low heights than a traditional lanyard. A high-capacity external energy absorber cushions the arrest, and an impact indicator shows if the unit has arrested a fall.

The twin-leg design of the 3M DBI-SALA 3500277 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 aluminum rebar lock hooks for anchoring, and the unit connects directly to your harness — ideal for moving around structures at height.

Both are the same 8 ft twin-leg Nano-Lok Edge SRL with a 420 lb (190 kg) capacity, rated ANSI Class 2 for foot-level tie-off and leading edge; the difference is the rebar lock hook material. The 3500277 uses aluminum rebar hooks, which are lighter — the whole aluminum-hook unit weighs about 8.1 lb (3.67 kg) versus about 8.6 lb (3.9 kg) for the steel-hook 3500276 — reducing weight and fatigue when climbing and handling the connectors. The 3500276 uses steel (zinc-plated) rebar hooks, which are heavier but very rugged. Choose aluminum (3500277) to save weight, or steel (3500276) for maximum durability; both connect to rebar and structural anchors the same way.

The aluminum rebar lock hooks on the 3M DBI-SALA 3500277 are large-gate self-locking connectors sized to attach to structural anchor points such as rebar, scaffolding, and beams that a standard snap hook can't fit around. Being aluminum, they are lighter than steel rebar hooks, which reduces the weight the worker carries. Each of the twin legs on this 8 ft model ends in one, for tying off directly to jobsite structures during leading-edge and foot-level work.

Yes. The 3M DBI-SALA 3500277 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 3500277 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 3500277 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 8.1 lb (3.67 kg). It ships with free shipping from Industrial Safety Products and is intended for industrial and occupational use only.

The 3M DBI-SALA 3500277 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 3500277 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 8.1 lb (3.67 kg).