- Each pack includes two Alnico bar magnets and one re-sealable tube of iron filings
- Magnet dimensions are 11mm x 6mm x 75mm
- North and south poles clearly identified
- Protective epoxy paint coating
- 80g of iron filings
The combination of iron filings and a bar magnets is a great way to show the patterns of magnetic fields. Simply place some of the iron filings on a piece of paper and move the magnet underneath the paper to see how the filings react and align to the magnetic field lines. Afterwards, place the filings back inside the re-sealable tube to use again and again. The iconic bar magnets are small enough to fit in your pocket and each magnet is protected by a red and silver epoxy paint coating.