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This is a key hook design to work with the gridfinity ecosystem.

There are 3 options for holes on the bottom:

- There are magnet hole
- M3 heat set insert(HSI)
- M3 self tap and magnet. 

Hardware used (Affiliate Links):

6mm x 2mm Magnets [https://geni.us/X9t1M](https://geni.us/X9t1M) (Amazon)

M3 Screw Set : [https://geni.us/gfP7w](https://geni.us/gfP7w) (Amazon)

M3 Heat Set Insert: [https://geni.us/Svm0Sl](https://geni.us/Svm0Sl) (Amazon)