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Black Diamond Stopper Pro 1-13 Set

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Size Guide
Black Diamond Nuts and Hexes Size Chart

Black Diamond Stoppers

Number Colour Size - Depth x Long Edge (mm) Strength (kN) Weight (g)
1 Red 4.3x9.1 2 7
2 Yellow 4.8x9.9 2 8
3 Blue 6.1x11.4 5 15
4 Grey 6.9x12.4 6 16
5 Purple 8.4x13.5 6 18
6 Green 10.2x15.5 10 32
7 Red 11.7x16.3 10 34
8 Yellow 13.5x18.3 10 37
9 Blue 15.2x20.8 10 39
10 Grey 17.3x23.4 10 43
11 Purple 20.1x26.7 10 51
12 Green 22.9x30.5 10 58
13 Red 26.4x35.1 10 71


Black Diamond stoppers are a good choice for a set of wires. Whilst perhaps not quite as popular as Wild Country Rocks or DMM Wallnuts they do provide a good alternative, or especially as a second climbing nut set. This is due in part to their considerably different shape in that they are fatter and squarer, meaning that you can cover more options for potential gear placements.

The nuts are anodized to aid quick gear selection. Most sizes have a transverse taper that permits sideways placements in flares and shallow seams, the smallest of sizes are straighter for better surface contact. The rounded edges reduce the chances of the nut snagging, making it easy to clean the route. All the stoppers have a durable galvanized steel cable which offers enough rigidity for above head placements, without the nut flopping around.

With the Stopper sets you end up with plenty of smaller wires due to their sizing (Roughly a Black Diamond Stopper 5 is equivalent to a size 2 Rock/Wallnut). The sets also come with a small racking biner (non load bearing)

Durable aluminum heads and steel cables
Transverse taper is versatile in flares, constrictions and parallel cracks (smaller sizes are straight for better surface contact)
Rounded edges for easy cleaning
Colour coded
Racking biner included (non load bearing)


  • Manufacturer: Black Diamond
  • Mpn: BD2251200000ALL

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  • Reviews (3)
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mihaela c.

I love these nuts!

I love these nuts!


great nuts!

I have had two sets of these since I started climbing, I retired the first set due to age not wear, they were very good. I find them deeply reasuring when you get a good placement, I find the curved profile does sit in flared cracks beautifully. When I sa

N Holbrook

Good all round shoe

I found the fit of these good for slim feet. They have sticky rubber for smearing whilst being not too soft for edges. Being synthetic and lined they remain a good fit over time. The Velcro is positioned well to fasten securely. They are a nice looking sh


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