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Black Diamond
ATC Guide

4.875 out of 5 stars
96 Reviews



ATC Guide

The ATC Guide Belay Device is already worthy of any climber's arsenal, but Black Diamond made it even better for alpinists and crag-stars alike. It still transcends the tube/auto-blocking category, allowing for a standard belay as well as belaying one or two climbers off anchors. Black Diamond upgraded it with machined windows for a lighter weight, and the larger auto-block release accepts smaller carabiners for a smoother and more dependable operation.


  • Black Diamond's best-selling belay device built 10% lighter
  • Multiple friction modes designed for both belay and rappel
  • Guide mode allows auto-block top rope belays at anchors
  • Auto-block release hole accepts small carabiners
  • Item #BLD00ZA
tube, auto-blocking
Rope Diameter
8.1 - 11mm
Manufacturer Warranty
1 year

Overall Rating

5 based on 96 ratings

Review Summary

1 Stars - 1 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 6 reviews
5 Stars - 88 reviews

What do you think about this product?


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5 out of 5 stars

June 4, 2024

Best ATC

I’m a glacier Guide in Alaska and use this almost every day on the glacier. Rappelling is awesome, belaying guests while ice climbing is amazing. And the auto block when it is in Guide/Block mode is spectacular. Very intuitive and easy to understand once you are trained up on using it properly.

Brandon L.

Originally reviewed on

5 out of 5 stars

May 12, 2024

Must need in alpine climbing

Belay from bottom or top. Rappel or ascend a rope. Very versatile


Originally reviewed on

5 out of 5 stars

March 24, 2024

Great ATC

Perfect for multi-pitches. I used my friends one for the longest time. Decided it was finally time to get my own .

Dallin H.

Originally reviewed on

5 out of 5 stars

March 6, 2024

Perfect device for ice

I use this device with double and single ropes on multi-pitch ice in the Adirondacks. Perfect, simple, always functional no matter how cold and while wearing mittens. Because it doesn’t have any moving parts and is so easy to operate, I would recommend this device for beginner and expert climbers. When you’re leading it racks easy and doesn’t take up much room leaving space for screws and whatever other pro you need.

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Sky S

Originally reviewed on

5 out of 5 stars

March 5, 2024

Very smooth belay, great for rappelling

I've used it several times

I normally use a grigri and decided to give the atc a try. It's so much smoother to belay with and it's cool to rappel with. I use it for outdoor top rope belays and some lead belays.

Julian J
5 out of 5 stars

March 3, 2024

The Best!

Love it! It never leaves my harness. It does it all: Belay, Guide mode belay and rappel. My favorite!

James K.

Originally reviewed on

5 out of 5 stars

February 7, 2024

Me favorite belay device

I like how the Black Diamond ATC Giude alines the rope when in guide mode. It works better for me than the other devices on the market.

Dallen W.

Originally reviewed on

5 out of 5 stars

February 1, 2024

Best Belay

The rope runs very smoothly even when belaying two people from above

Mason H.

Originally reviewed on

5 out of 5 stars

December 29, 2023


Its simple, easy to use, and works when you need it. Smooth rapping and belaying.

Blake D

Originally reviewed on

5 out of 5 stars

November 7, 2023

Great product.

I have been using the ATC guide for years. Great product.

Keith H.

Originally reviewed on