Remixed https://makerworld.com/en/models/62433?from=search#profileId-65000 to be able to fit up to a 5x5 Magnet or non magnet gridfinity grid of your choice.
I used:
https://makerworld.com/en/models/26565?from=search#profileId-23222
https://makerworld.com/en/models/54250?from=search#profileId-108822
Mounted to shelf with epoxy, holds up pretty well using 2-4 large size command strips.