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The D4 Work/Rescue Descender features a unique and innovative cam action, which offers precise control at slow or fast speeds. The progressive cam works by way of one cam operating inside another cam. The D4 is the only ANSI certified descender on the market today.

• Weight: 655 grams (23 ounces)
• Strength: MBS 16kN (3597lbf)
• For use with single ropes from 10.5 - 11.5mm (7/16")
• Working Load Rating (WLL): 240kg (551lbs.)
• Certifications: CE EN12841, NFPA 1983, ANSI Z359

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CMI Sport Racks are formed from 5/16" diameter stainless steel and are fitted with oversize stainless steel bars. We chose stainless steel over aluminum because of its "wearever" qualities. Learn More

The handy alternative for shorter drops or lighter loads. To reduce weight, the rack is drawn from 5/16" stainless steel, and the solid bars are formed from anodized aluminum. Learn More

The handy alternative for shorter drops or lighter loads. To reduce weight, the rack is drawn from 5/16" stainless steel, and the solid bars are formed from anodized aluminum. Learn More

We chose stainless steel over aluminum because of its "wearever" qualities. In order to compensate for the reduced friction inherent in stainless bars, we increased the radius of the friction surface to a full 1/2". Learn More

The Petzl ID is a self-braking descender with an anti-panic function built in. Learn More

The Figure 8 by Omega Pacific remains a popular device for their simplicity, durability and dependability. Learn More

Our HyperBars, a solid anodized aluminum bar with a single lock-off pin, allow for easier and safer lock offs. The HyperRack includes a single HyperBar. Learn More

Compact self-braking descender, Lock off and work with minimum gear to tangle. The Petzl Rig is a proven performer for the zip line and ropes course construction industry. Learn More