This belay device is Normal Use
Everyday wear from regular use, such as visible scuffs, scratches, light pilling, or fading.
Black Diamond
Condition: Normal Use
US sizes are approximate. Use Mondo to choose your boot size.
Mondo is based on foot length in centimeters. Measure both feet in thin ski socks and use the longer measurement as a starting point.
US equivalents are approximate and vary by brand. A listed US reference may differ from this general chart. Width, foot shape and liner fit matter too.
| Mondo | US Men’s ≈ | US Women’s ≈ |
|---|---|---|
| 21.5 | — | 5 |
| 22 | — | 5.5 |
| 22.5 | — | 6 |
| 23 | 5 | 6.5 |
| 23.5 | 5.5 | 7 |
| 24 | 6 | 7.5 |
| 24.5 | 6.5 | 8 |
| 25 | 7 | 8.5 |
| 25.5 | 7.5 | 9 |
| 26 | 8 | 9.5 |
| 26.5 | 8.5 | 10 |
| 27 | 9 | 10.5 |
| 27.5 | 9.5 | 11 |
| 28 | 10 | 11.5 |
| 28.5 | 10.5 | 12 |
| 29 | 11 | — |
| 29.5 | 11.5 | — |
| 30 | 12 | — |
| 30.5 | 13 | — |
Whole and half sizes can share a shell; keep the exact size marked on the boot. Boot sole length in millimeters is for binding setup, not shoe sizing.
For kids’ boots or a size outside this chart, .
The Black Diamond ATC is a simple, reliable belay and rappel device that has been a staple in climbing kits for years. Lightweight and easy to use, the ATC works with a wide range of rope diameters and provides consistent friction for controlled belaying and rappelling. Whether you’re building out your first kit or need a backup device, this is a proven, no-frills piece of gear that gets the job done.
Key Features
Condition - Normal Use
These belay devices have seen some use and have normal wear and tear, but are in good working order.
**The item shown in the photos is the same make, model, and color that you will receive; however, the exact condition may vary. All items for sale are fully functional and still have plenty of usable life left, but they may exhibit cosmetic wear from normal use. Surfaces may show signs of use such as scratches, scuffs, or other minor imperfections. We do our best to accurately represent the condition of our inventory, but it can be difficult to show every detail. As a result, the item you receive may vary slightly in condition from the photographs shown. Please feel free to reach out with any questions or concerns.**
**Climbing is an inherently dangerous activity that involves significant risks, including but not limited to serious injury or death. These risks may arise from equipment failure, human error, environmental conditions, falling objects, or other unforeseen hazards. Gearonimo, its owners, affiliates, and representatives are not responsible or liable for any injuries, damages, or losses that may occur as a result of climbing or the use of any related equipment, information, or services. All activities are undertaken at your own risk.**
Questions about this item? We’re happy to help.
1401 S 8th Street
Colorado Springs, CO
Mon–Sat: 10am–6pm
Sunday: 10am–4pm
Our Colorado Springs specialists check each item and assess its condition. You’ll receive the exact item you choose.
See photos and item notes for details.
Our Colorado Springs specialists inspect each item. Compare the seven condition grades below, and check the product photos and item notes for specific wear, repairs, or limitations.
New, never-used gear ready for its first adventure. Tags or original packaging may be missing; minor marks from storage may be present.
Looks almost new, with very little wear. It may have been used, or its unused history cannot be confirmed.
Light signs of use, such as small scuffs, faint scratches, or minor fabric wear.
Everyday wear from regular use, such as visible scuffs, scratches, light pilling, or fading.
More noticeable wear, such as deeper cosmetic scratches, heavier pilling, fading, or worn contact areas.
Substantial wear. Check the listing carefully for remaining function, missing parts, limitations, and any work needed before use.
For parts, display, collecting, or a project. Not sold as ready for its original intended use.