Sterling Rope ATS Device

The ATS is a versatile rappel device designed for climbers and canyoneers who want more control than a standard ATC. Unlike a basic tube device, the ATS lets you adjust friction. You can flip between the concave and convex sides for more or less resistance, or wrap the rope around one of the horns for maximum friction. The horns also allow for a quick tie-off if you need to stop mid-descent and go hands-free to manage gear or solve a problem.

I recently used the ATS while descending Bluejohn Canyon, and it performed well, although it did sustain more wear than expected. The ropes we used were older and dirty which does add to wear on rappel devices. I highly recommend pairing it with a steel carabiner — the steel stands up to friction much better than aluminum and takes on a significant portion of the wear. If you want a rappel device that gives you options in tough canyoneering conditions, the ATS is a great choice.