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Dangerous Magnets Ltd is your helpful & reputable source for extra 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.
- For sensitive devices (e.g. credit cards, pacemakers, magnetic recording), keep at a sensible distance, i.e. where the field is negligible.


This is a pack of 120 tiny, really powerful (for their size), neodymium, "rare earth" magnets.

Strength Rating: N52, the strongest magnet material made. Many magnets are N35 (even when specified as N45!) which is a considerably weaker grade.
One magnet releases another (or 0.38mm steel sheet) at about 130 grams before it releases. Between two sheets of steel, 420 grams!
A single magnet can hold up one (actually two - just) A4 sheet on a whiteboard, but they are too small to easily to remove. For easy-to-handle magnets on whiteboards, I recommend our D6x6mm, use in pairs. Or D4x4 in threes.

Dimensions: 3mm diameter and 1mm thick. They are plated nickel over copper over nickel for durability.

Potential Uses

- Latches & closures (Wooden boxes, doors, etc)
- Frictionless spring (either tension or compression)
- Triggering reed switches and other actuators
- Warhammer etc. For attaching parts of models or for Movement trays.

If you prefer half a pack of these, along with half a pack of D2x1mm or D2.5x1.5mm or D4x1.5mm or D5x0.5mm, or others, Priced at the higher of the two packs, then do a buy now of this auction, and before you pay, ask me to make this change and send you a modified invoice with payment options. (And extra half packs if you wish.)

Combine freight with other magnet purchases.

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

  • Courier. All RURAL DELIVERY, including R.D. 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

  • NZ bank deposit
  • Cash