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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. Larger ones, particularly in groups, can crush fingers.
- For sensitive devices (e.g. credit cards, pacemakers, magnetic recording), keep at a distance where the field is negligible.


This is a pair of massively powerful, neodymium, "rare earth" magnets, having a direct pull to each other (or 2.4 mm steel) of about 12 kg. (Or a stack of 2 pulling to another stack of 2, 19 kg) (Or one magnet between 2 steel plates... 27 kg)
(Resistance to sliding is about 1/3 that.)

Dimensions: 25mm diameter by 6 mm thick, with 4.3 mm countersunk hole to take #6, stainless steel, self-tapping, mounting screws.
Strength Rating: N45. Many magnets sold in NZ are N35 grade or lower, and are significantly weaker. One trader dishonestly advertises a weaker grade as N45.

Neodymium magnets have about 10 times the power of same-size, traditional magnets.

I supply with different poles on the countersunk sides so you can mount magnets attracting each other. Let me know if you wish otherwise.

(See our other magnets with mounting holes, including our "pot" magnets)

Potential Uses
- Door closures. Or holding doors or gates open. Either mount facing each other, or off-set and sliding across each other but not touching. (For outdoor use, seal from the weather)
- Holders (Tools, etc)
- Clamp components while adhesive cures.
- Hold panels/fittings/tools to steel walls.
- Industrial fixtures.
- Retrieving lost steel items.

For our many other magnet sizes click "Sellers Other Listings" or search “Dangerousmagnets”. For a list without duplications, go to 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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