Does anyone know what this type of tool holder connection it is for a Mori Seiki AL-2B I'm thinking of purchasing?
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I have found some keys on eBay but I can't find any tool holders is it a standard holder of some description?
Image may be NSFW.
Clik here to view.

I have found some keys on eBay but I can't find any tool holders is it a standard holder of some description?