Super Strong Neodymium Magnet

Extremely strong cylindrical rare earth magnet! Pull strength of 17kg.
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Extremely strong rare earth magnet! This cylindrical neodymium magnet measures 20mm high and 12mm in diameter, and has a massive pull strength of 17kg. Provides a great demonstration of the strength of rare earth magnets. Also works well with our magnetic putty.

Age: 12 + with adult supervision. This magnet is not a toy and is not intended for use by young children.

What You Get

Neodymium N50 rare earth magnet, nickel coated, cylindrical, 12mm diameter and 20mm height

Diameter: 12mm (0.472" in.)
Height: 20mm (0.787" in.)
Grade: N50
Coating: Nickel (Ni)
Magnetized Direction: Through height - 20mm
Theoretical Holding Force: ~17.24kgs (38lbf)
Surface Gauss: 6751 Gauss

How does it work?

Neodymium magnets are made from a mix (alloys) of rare earth elements: neodymium, iron and boron (Nd2Fe14B), and are the strongest type of permanent magnets.

Test the strength of this beauty by using our metal slinky. Your students might be very surprised when this relatively small magnet lifts many more coils than much larger, weaker magnets like common ferrites.

Rare earth magnets are brittle and can chip or break when dropped on a hard surface or allowed to smash together with another magnet or a piece of metal. These magnets must be used with care, they can disrupt sensitive electronic equipment like computers, and can leap together from a distance and pinch fingers.


  • Metals and magnets
  • Magnet properties
  • Strong neodymium magnets

Small parts not suitable for children under 3 years. Should a child or any person ingest magnets, seek medical help immediately.

Do not store or handle magnets in proximity to iron, steel or other ferrous materials or items. Serious injury or property damage may result.


Persons with pacemakers, metallic implants or neurostimulators must not handle magnets. Serious injury may result.

Permanent magnetic fields may corrupt, degauss or destroy data stored in a magnetic state. This includes floppy disks, hard drives and credit cards.

More Information
Length (cm) 2
Width (cm) 2
Height (cm) 3
Size 19mm
Age Group 12+ Years
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