3M DBI-SALA 1244409 ShockWave 2 Twin Leg Shock Absorbing Lanyard — 6 ft 100% Tie-Off, Rebar Hooks

The 3M DBI-SALA ShockWave 2 twin leg shock absorbing lanyard explained

The 3M DBI-SALA 1244409 ShockWave 2 is a 6 ft twin leg shock absorbing lanyard built for 100% tie-off. Its stretchable tubular polyester web expands to 6 ft under load and contracts to about 4½ ft as you move, so there is less slack to drag, snag, or trip over. Inside, an energy-absorbing core extends in a fall to limit the forces on your body, and a built-in impact indicator gives you a clear visual check afterward.

As a double leg lanyard it lets you stay clipped to at least one anchor at all times — a true 100% tie off lanyard. Buyers searching for a premium tie off lanyard or specifically the shockwave 2 lanyard are usually after exactly this: a light, stretchy twin-leg with 3M's self-locking hooks.

Key features

• 6 ft (1.8 m) twin-leg design for continuous 100% tie-off
• Stretch web contracts to ~4.5 ft to cut trip, drag, and snag hazard
• Abrasion-resistant polyester tubular webbing (1 15/16")
• Center self-locking snap hook — glove-friendly, connects to the harness back D-ring
• Self-locking aluminum rebar hooks at both leg ends
• Internal energy-absorbing core plus a built-in impact (fall) indicator
• Labelled for industrial / occupational use

Pros & cons

Specifications

What this lanyard is for

Crews moving across rebar, structural steel, and scaffolding who need to stay tied off through every step — steel erection, tower, bridge, and heavy construction. It is ranked in our fall protection lanyards guide, and it is the connecting-device stage of the ABC system explained in our fall protection equipment guide and the ABCDs of fall protection. Because it is a lanyard and not a reeled SRL, plan for full lanyard fall clearance below your feet.

Compatibility

The center snap hook clips to the dorsal D-ring of a full body harness, ranked in our safety harness guide. Inspect the harness and the whole rig per our harness inspection reference before every use.

How the ShockWave 2 compares

Against 3M's own single-leg 1241460 shock absorbing lanyard, the ShockWave 2 adds a second leg for 100% tie-off. Compare other twin-leg options: the MSA Workman twin-leg, the rebar-hook SafeWaze V-Line, the tie-back Petzl ABSORBICA-Y, and the restraint-only Guardian 01271 non-shock. If you actually need a reeled device that locks in inches, compare our self-retracting lifelines and read the trade-offs in shock-absorbing lanyard vs SRL. Browse the full lanyards & lifelines collection, build a rig from our best fall protection kits guide, or see everything in the fall protection collection.

Safety note: a twin-leg shock-absorbing lanyard is one component of a personal fall arrest system — it works only with a rated full body harness and rated anchors under OSHA 1926.502. A lanyard needs full fall clearance below your feet (free fall plus absorber deployment plus your height plus a safety margin), and 100% tie-off only protects you if you actually keep one leg clipped during every move. Verify your clearance, inspect both legs and all three hooks before every use, and retire the lanyard after any fall or once the impact indicator has deployed.

Ordering FAQ

Is the 3M DBI-SALA 1244409 ShockWave 2 in stock and ready to ship?
Availability changes — open the linked listing for live price, stock, and delivery speed before you order.

What does 100% tie-off mean on this lanyard?
It has two legs. As you move past an obstruction you clip the free leg to the next anchor before unclipping the first, so you are always attached to at least one anchor — 100% tie-off, no unprotected moment.

How long is it?
6 ft (1.8 m) at full stretch. The web contracts to about 4.5 ft (1.4 m) when you are not pulling against it, so there is less slack to drag or snag.

What connectors does it have?
A self-locking snap hook at the center leg that clips to your harness back D-ring, and a self-locking aluminum rebar hook at each of the two leg ends for clipping to rebar or structural steel.

Are the rebar hooks easy to use?
They are self-locking aluminum rebar hooks with 3M's patented glove-friendly snap-hook design at the center. Some users find the rebar-hook gate release stiff to work one-handed at first — practice the gate action on the ground before you rely on it at height.

How do I know if it has caught a fall?
An internal core extends and absorbs energy in a fall, and a built-in impact indicator gives visual evidence that the lanyard has been loaded. If the indicator shows deployment, remove the lanyard from service immediately.

Is this a self-retracting lifeline (SRL)?
No. It is a shock-absorbing lanyard with a stretch web, not a reeled SRL. It needs full lanyard fall clearance below you, not the few inches an SRL needs. If you need a reeled device, see our self-retracting lifelines guide.

What is the rated weight capacity?
The manufacturer listing does not print a single capacity figure. Confirm the rated capacity range in the 3M user guide and on the product label, and keep total weight (worker plus tools) within the lowest rating in your connected system.

Is it OSHA and ANSI compliant?
3M labels it for industrial/occupational use and states its products must be used in compliance with OSHA and ANSI. The listing does not print a specific ANSI Z359 sub-number, so confirm the current standard and edition in the 3M user guide for your application.

Where does it connect on my harness?
The center snap hook clips to the dorsal (back) D-ring of a full body harness; each leg's rebar hook clips to a rated anchor or structural member.

How do I inspect it before use?
Run both legs of web through your hands for cuts, fraying, burns, or chemical damage; confirm the energy-absorbing core and impact indicator are intact and not deployed; check the center snap hook and both rebar hooks for cracks, corrosion, and correct self-locking gate action. Remove from service after any fall or sign of deployment.

How do I reorder for a crew?
Reorder from this page — the listing and its linked item stay constant, so matching a crew's twin-leg lanyards from the lanyards & lifelines collection takes seconds.

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