What magnet to attach knife bar to refrigerator? Magnets

Hey Gang,

I have this magnetic knife holder..

It is meant to be screwed into place on the wall. My new place has very little wall space (lots of tile in the kitchen). I'd like to glue some magnets to the back and then have the knife holder stick to my refrigerator.

I bought these ones recently but they don't feel strong enough. They slide around too easily on my fridge and I worry that they won't hold the weight of the holder and multiple knives.

So gang, what magnet(s) would you recommend? Thanks!

Submitted December 30, 2017 at 10:47PM by JJPhat http://ift.tt/2lnBOsK Magnets