Yes. The 3M DBI-SALA Rollgliss R550 is a fully automatic, controlled-descent rescue and descent device built for evacuation and rescue from elevated work areas such as wind turbines, utility poles/towers, and industrial structures. It can lower one user weighing up to 310 lb (141 kg) from heights up to 1,640 ft (500 m), or two users totaling up to 620 lb (282 kg) from up to 575 ft (175 m). Because it is bidirectional and includes a rescue wheel, it also supports assisted rescue with lifting — a fallen worker can be raised enough to release their fall-arrest device, then lowered safely to the ground. The kit ships with a 4 ft (1.2 m) anchor sling, two carabiners, and a carrying bag, and qualifies for free shipping.

The 3M DBI-SALA Rollgliss R550 is an automatic controlled-descent rescue device. It uses a dual-brake system that automatically regulates descent speed, so a user or rescuer descends at a safe, steady rate without needing to manually control the rope. It runs on a 3/8 in (9.5 mm) super static kernmantle rope (braided polyester cover over a nylon filament core) and is configured with connecting hardware at both ends of the lifeline so it operates in both directions (bidirectional). This lets it perform controlled-descent rescue, self-evacuation, and assisted rescue with lifting from a single device.

The 3M DBI-SALA Rollgliss R550 rescue and descent device meets or exceeds ANSI Z359.4 (the U.S. standard for assisted-rescue and self-rescue systems), OSHA 1926.502, OSHA 1910.140, and the Canadian standard CSA Z259.2.3-12. These certifications cover its use as a controlled-descent rescue and evacuation system for occupational, at-height work.

The 3M DBI-SALA Rollgliss R550 can perform rescue and evacuation from heights up to 1,640 ft (500 m) for a single user weighing up to 310 lb (141 kg), or up to 575 ft (175 m) for two users with a combined weight up to 620 lb (282 kg). It is offered in lifeline lengths from 50 ft up to 500 ft, so you select the length that matches your structure's working height.

The rescue wheel is a hand wheel, molded from Supertough® nylon, built into this R550 model to give a rescuer ergonomic control for raising (lifting) a fallen worker. During an assisted rescue, the rescuer uses the wheel to raise the casualty just enough to take their weight off and remove their fall-arrest connector, then the device's automatic brake lowers them to the ground. The wheel is what enables the R550's lifting capability, versus descent-only models.

The main difference is versatility. A basic descent device only lowers one person. The Rollgliss R550, especially this kit with its rescue wheel, is bidirectional and adds lifting: it can lower a user, lower two users at once (up to 620 lb / 282 kg combined), or raise a fallen worker to detach their fall-arrest device before lowering them. Its dual-brake, fully automatic controlled descent means the speed is regulated for you. That makes it a single tool for controlled-descent rescue, self-evacuation, and assisted rescue.

The 3M DBI-SALA Rollgliss R550 kit (part 3327100) includes the R550 automatic controlled-descent device with the integrated rescue wheel, a 4 ft (1.2 m) anchor sling, two carabiners, and a carrying bag. The device weighs about 13.9 lb (6.3 kg), is finished in high-visibility yellow, and is equipped with i-Safe for inspection tracking. It qualifies for free shipping.

The 3M DBI-SALA Rollgliss R550 rescue and descent kit is available in 11 lifeline lengths: 50, 100, 150, 200, 275, 300, 325, 350, 400, 450, and 500 ft. Choose the length based on the maximum descent height at your worksite — for example, the 100 ft model suits work platforms around that height, while the 500 ft version covers tall towers and turbines. All lengths use the same 3/8 in (9.5 mm) super static kernmantle rope.

Yes. The 3M DBI-SALA Rollgliss R550 supports two users at the same time, provided their combined weight does not exceed 620 lb (282 kg), for descents up to 575 ft (175 m). For a single user (up to 310 lb / 141 kg), it can be used from heights up to 1,640 ft (500 m). Its automatic dual-brake system regulates the descent speed in either case.

Yes. The R550 uses high-strength, corrosion-resistant construction — an aluminum housing with zinc-plated steel connecting hardware — suited to demanding environments like wind energy, utilities, oil & gas, and mining. An optional sealed humidity case is available for certain configurations; it provides a minimum 10-year storage life and has an external humidity indicator so you can inspect the seal without opening the case, protecting the device between deployments.