• Descent 305 - Pre-order is open!!

    Our August/September issue has a publication date of 2 August, and it is a special summer bumper issue full of stories of exploration and wonder from the underground world.

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Jug Holes Spanner

I *think* it was M16, so 24mm head? Sorry, I should know, I did organise the replacement of it a few years ago but can't find any notes. A search of the forum here might bring up the exact size as it was discussed at the time.
 
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