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

- Keep from young children! If two or more are swallowed 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.
- For sensitive devices (e.g. credit cards, pacemakers, magnetic recording), keep at a distance where the field is negligible.


A pack of 12 amazingly powerful, neodymium magnets. Neodymium magnets have about 10 times the holding power for their size than traditional material magnets.

They have a direct pull to each other, or 1.4 mm (or thicker)sheet steel, of about 2.5 kg in ideal conditions or 12 kg between 2 sheets of steel.
2 in a stack will pull about 4.4 kg to 1.6 mm steel or another stack. 3 stacked: 5.3 kg to 1.85 mm steel or another stack.

Dimensions: 12 mm diameter by 3 mm thick, with a 3 mm countersunk mounting hole. (Don't over-tighten screw or magnet will break.)
(For mounting, use #4 countersunk, self-tapping screws, available on-line from Steelmasters, etc.)

6 are countersunk on the North side, 6 on the South, so they can be mounted to attract or to repel each other.

Strength Rating: N45. Many magnets sold in NZ are N35 grade or lower, and are significantly weaker. One trader, possibly misled by his Chinese supplier, is even dishonestly advertised a weaker grade as N45.

Potential Uses
- Latches & closures, eg cupboard doors
- Holding tools and other items to a surface.
- Clamp components while gluing.
- Secure display of work-site documents against strong wind. (Attach to a short dowel for easy handling.)

For our many other sizes of magnet, including others with mounting holes, click "Sellers Other Listings" or search “Dangerousmagnets”. For a list without duplications, Please read the questions and answers for this listing.
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Shipping options

  • Courier. All Fastway Rural Delivery, incl Auck.$12.00
  • Courier. Nationwide - Non Rural Delivery$6.00
  • Pickup, from the Onehunga end of Hillsborough$0.00
  • Additional item (= or higher courier already paid)$0.00
  • PO Boxes, i.e. DON'T! Courier cannot deliver.$50.00
  • Seller allows pick-ups
  • Seller location: Auckland City, Auckland, NZ

Payment options

  • Other options
    Cash, NZ bank deposit

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