The Uncarved Block Ergo Wrench fits perfect in either hand and has a rounded tip to reduce time spent lining up the wrench in larger holds.

Complete with a 5mm hole to attach some cord which will allow you to hook it on your harness with a carabiner for route setting. Color will be random.

The Large Ergo Wrench fits all standard imperial 3/8" Socket Head Bolts and size is 5/16".

Want to use a drill instead?  Just get the 5/16" straight ball-end hex key here.

If you are viewing this product on a mobile or tablet, you may be able to view this hold on your wall actual size! Tap the plus sign to try it yourself!

View on Your Wall

  • All bolt-on holds/sets require socket head type bolts, except for the Classic Footholds Set which requires countersunk head bolts.
  • All bolts Uncarved Block sells are imperial 3/8" diameter with UNC threads.
  • Unless otherwise stated, t-nuts are not included with holds or sets.
  • Any items shown in pictures other than holds are to show scale and are not included with purchase.
  • More information about hold colors click here.
  • Bolts optionally supplied with holds/sets are suited for 17-20 mm thick climbing walls, if you require longer bolts order these separately.
  • It is cheaper & faster to select random colours.


By: on 5 May 2023
I had one of these when they were made of fibreglass, but it broke. Glad they are now made of urethane. Fits perfect in the hand and large enough to get enough torque on it.

Feels goooood!

23 July 2020
Works perfectly and looks great.

Super handy and super ergo

25 June 2020
I love this little tool. It is super helpful when setting routes and really sits nice and comfortably in the hand. Not as clumsy as an impact driver. The rounded tip is great because sometimes the hold is just out of reach to get square to it, so when your reaching out you can still tighten and loosen bolts. Really happy I added this to my order

Great value

25 June 2020
Has a ball joint type end, so easy to angle and use, the handle helps with the grip and looks cool! :-) Great value, too. Excellent service and delivery.

Reliable and durable

26 October 2019
We include one of these with each install :)

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