I have some that will seriously hurt a finger if it gets between them when they "jump" to each other, and that can be from 8" away. So they could pull around tiny rust bits under the skin, but those are so tiny it might not be enough to make a visible wound. These are about 1" x 1/2" fragments of larger magnets.
I have some that will seriously hurt a finger if it gets between them when they "jump" to each other, and that can be from 8" away. So they could pull around tiny rust bits under the skin, but those are so tiny it might not be enough to make a visible wound. These are about 1" x 1/2" fragments of larger magnets.