3500228 – Nano-Lok edge (SRL) Self Retracting Lifeline – 9 ft. (2.7 m) – Steel lifeline w/ tie back hooks – Twin leg – For horizontal use / leading edge – Single-pin Connector

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  • 9 ft. (2.7 m) – of 3/16″ (5mm) galvanized steel wire rope lifeline
  • Twin leg allows for 100% tie off – Fantastic mobility
  • Single-pin connector for attachment to harness
  • Tie-back hooks for attachment to structure
  • Designed for foot-level tie-off and sharp edge applications
  • Equipped with 3M™ Connected Safety ID (CSID)
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9 ft. (2.7 m) twin-leg lifelines with 3/16″ (5mm) galvanized steel wire rope and tie-back hooks, quick connector for harness mounting.

    • Designed for foot-level tie-off and sharp edge applications
    • Integrated backpack style energy absorber
    • Tie-back hooks on each lifeline for attachment to structure
    • Twin leg – 9 ft. (2.7 m) lifeline with 3/16″ (5mm) galvanized steel wire rope
    • Built-in connector for quick attachment to harness

Leading Edge SRL's

Leading Edge SRL's are intended for use when no overhead anchor point is available and foot-level tie-off is your only option.

This type of SRL is ideal for users working at more 6ft. fall clearance and along leading and sharp edges. When users are tied-off at foot level they are at risk for a greater fall, but these devices are designed to limit a fall within 18-24 inches; minimizing the chance of injury. Leading-edge SRL's are also equipped with deal with 'sharp edges' which are razor thin corners small enough to cut through traditional lifelines.

Leading-edge Vs. Regular SRL's
  • Leading edge SRL's are designed for foot-level tie-off
  • Leading edge SRL lifelines are designed for use on sharp edges
  • Works well with the self-rescue system


Self-retracting lifelines (SRL's)

An SRL is an alternative to traditional shock absorbing lanyards and work a lot like a seat-beat - pull out slowly and extend the line; but don;t you try to run with it.

These devices are specifically designed for professionals who work way up high - stopping falls within inches to allow great mobility.

Real quick - whats an SRL?
  • Retractable lifelines designed to stop a fall within inches.
  • Constantly under tension, but extends or retracts as the user moves up and down.
  • Offers greater protection then a shock absorbing lanyard.

TL;DR - Self-retracting lifelines connect a harness to an anchor and offers great fall protection than a simple lanyard.


Tie back hooks are designed for use / attachment with steel beams, girders, truss, or other open beam designs.

Tie back hooks are best suited for for attachment around steel beams or any other open beam, truss, etc.

Nano-lok SRL

These little devices make a big difference when it comes to working at height.

The new Nano-lok SRL's are easy to install, smaller and even take more of a beating than the previous model could.

Next-gen Features
  • Installation is 60% quicker
  • Rubber cover lasts 4x longer than the previous model
  • 4ft. overhead fall clearance per OSHA 1910
  • ANSI Class A/B models limit falls within 24"
  • 6ft. fall clearance required on Class B SRL's
  • Knee-level of higher tie-off.

"Nano-lok SRL's are the lightest ANSI certified SRL that allows for knee level tie-off."


Additional information

Weight7.95 lbs
Dimensions6 × 6 × 6 in
Connection Material

Galvanized steel

Hook type to structure

Tie-back Hook

Overall Length

9 ft. (2.7 m)

Hook type to Harness

Single-pin connector


Product Family

Lifeline Material

Galvanized Cable

SRL Application

For horizontal use

Lanyard Leg Count



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