Mutable Instruments Breadboard Friends potentiometer PCB.

https://pichenettes.github.io/mutable-instruments-diy-archive/bbf/

For the full set please see here:

https://www.ebay.co.uk/itm/186064256394

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Having a clear out before stocking new stuff, so please check other auctions. 

Sorry about the low feedback! It's due to this being a new store. Have been selling modules and audio bits on eBay since 2004, with 100% feedback on over 2000 transactions. Please don't hesitate to get in touch.