You are correct they are very strong magnets. But the distance at which they stick to metal isnt very big. Try it once yourself. Try sticking something metal to the backside of the magnet while its still on the bracket. It wont stick. Now if you have a box full they tend to stick to each other magnet side to magnet side and usualy once in the box nothing really sticks to the box. Thats been my experience anyway.
Bookmarks