10 Pair Neodymium Magnetic Jewelry Clasps 12x6x6mm SILVER DOUBLE

You are buying ONE lot of 10 Pairs of Magnet Clasps. Size per Piece: 12mm long x 6mm wide x 6mm thick block (large holes 2.5mm dia.; small holes 1mm dia.)
(0.5" x 0.2" x 0.2")
The Silver is an additional layer on top of a nickel plating. The silver can rub off with extensive handling.
Grade: N40 - Extremely powerful magnetic material
NEODYMIUM MAGNETS ARE NOT SAFE FOR CHILDREN Since opposite poles attract, the magnets are sold in matched pairs:
half of the magnets have the south pole on the large hole side, half of them have the north pole on the large hole side.
(see diagram below)
These Neodymium Iron Boron magnets are also known as "Rare Earth" or NdFeB magnets. Neodymium magnets are simply incredible!
They are far more powerful than those old horseshoe magnets most of us grew up with.

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