Encased Iron Filings 85mm Diameter
No more loose filings, these are totally encased in a plastic container!
Use to observe the effects of invisible magnetic fields.
Great way to explre iron fillings without they going everywhere.
awesome products that matched my requirements perfectly
I could not describe these as iron filings, more as iron granules. They were too big and certainly showed little response to the magnets. Though I liked the idea of them being contained.