Dangerous Magnets Ltd is your helpful & reputable source for incredibly strong neodymium magnets that never weaken with age.

WARNINGS

• Keep from young children! If two or more are swallowed (or 1 plus a steel object) they can be lethal, by attracting across gut tissue and puncturing it.
• The material is brittle so it can chip or break if magnets crash together. Eye protection advised.
• Magnets can pinch skin and cut clothing. Larger ones can crush fingers.
• For sensitive devices (e.g. credit cards, pacemakers, magnetic recording), keep at a distance where the field is negligible.

PRODUCT DETAILS

This is a single, very powerful, neodymium, "rare earth" magnet. (Sorry, you don't get the photo's coin)

Dimensions: 12mm diameter x 16mm long. (Easy-grip shape)

Strength Rating: N45. One magnet has a pull of over 6 kg to 6.5 mm steel plate (or to another similar magnet). Proportionately less for thinner steel. They are really difficult to pull off a surface without tilting or sliding.

It is ideal as a "gutsy", manageable magnet is needed for school or university science projects eg Gauss canon, homopole motor, levitron, etc, or just learning about magnetic fields.

Learn about magnetic fields, by putting the magnet in a plastic bag or under a plastic or cardboard sheet, and sprinkling iron filings or iron sand (from a West Coast beach) over the area. To remove any of this material stuck to the magnet, use adhesive tape.

By request, for the same price, you may substitute this purchase for one of these: D15x2.5mm or D20x5mm (both with hole), D15x15mm. See my listing for a single D8x8mm magnet for other single-magnet options.

Note: I am allowed to sell cheaper in quantity through my other auctions but only for hardware or scientific uses, or where they will become component parts of other products.

We have many other magnet sizes for projects: Click "Sellers Other Listings" or search “Dangerousmagnet”. For a list without duplications, http://omins.info/dangerousmagnets/