DMM Nutbuster - Black

The DMM Nutbuster is a highly engineered tool designed to improve upon standard nut key designs. I...

Best current price£17.00from Tiso

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TisoUnisex Black Dmm Nutbuster - Narrow Profile - Rubber Handle - 17Mm Spanner - Trad Climbing Equipment
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£17.00
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AmazonDmm Nutbuster Green
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£21.93
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Product Information

Full details

The DMM Nutbuster is designed for rock climbers who require a reliable and ergonomic tool for removing stuck protection during climbs. Its key benefit is the combination of a high-leverage, comfort-grip handle and a precision-engineered stainless steel blade that makes extracting difficult nuts efficient and safe. While it offers superior performance in tight placements, users should be aware that the added features make it slightly bulkier than minimalist, ultra-lightweight nut tools.

All features

Model Part NumberC1252BLK
BrandDMM

Extended Product Information

FAQs

Is the DMM Nutbuster suitable for alpine climbing?

Yes, its stainless steel build is highly durable and resistant to the harsh, wet conditions often found in alpine environments.

Does the nut key come with a leash?

No, it features an attachment hole for a carabiner or cord, but a leash is not included.

Will the 17mm spanner fit all climbing bolts?

It is designed to fit standard 17mm bolts, which are common for most modern sport climbing anchors.

Is the metal sharp enough to damage my gear?

The tip is designed for leverage; while it is effective at moving nuts, it is not sharpened in a way that should damage standard climbing wires or slings.

How heavy is the tool?

While exact weight can vary slightly, it is engineered to be lightweight to remain unobtrusive on a climbing harness.

Troubleshooting

The tool feels slippery when wet

The rubber grip is designed to be high-friction, but if it becomes covered in chalk or mud, wipe it down with a damp cloth to restore the texture.

Spanner feels loose inside the handle

Check that the internal housing is free of dirt or debris; a quick rinse with water usually restores the snug fit.

Pros and Cons

Pros

  • Excellent hand protection due to the thick rubber handle
  • Effective at reaching deep, restrictive gear placements
  • Integrated 17mm spanner adds utility for bolting maintenance
  • High corrosion resistance for coastal or alpine environments

Cons

  • Slightly heavier and bulkier than basic wire-style nut keys
  • The wide handle may feel stiff in smaller gear loops
  • Not suitable for extremely deep, narrow cracks where a thinner tool might fit slightly deeper

Setup, Compatibility & Care

To use the DMM Nutbuster, simply clip it to your harness via the integrated attachment hole using a lightweight accessory carabiner. When cleaning a piece of gear, place the hooked end of the tool behind the head of the nut or the wire cable to exert upward force. To utilize the 17mm spanner, open the handle access point to grip the bolt nut. Regarding care, the stainless steel composition is highly resistant to rust, but it is best practice to rinse the tool with fresh water after climbing in coastal or salty environments to prevent any grit buildup. Ensure the tool is kept dry before storing it in your gear bag for long periods.

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