10pcs 15mm x 4mm Hole 4mm grade N52 Super Strong Ring Disc Rare Earth Neodymium Crafts Fridge Magnets

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10pcs 15x4mm Hole 4mm Super Strong Ring Disc Rare Earth Neodymium Magnets grade N52

Specification:
Dimensions: 15mm x 4mm thick (approx. 5/8"x5/32")
Diameter of bore: 4mm (5/32")
Tolerances: ±0.2mm x ±0.2mm (0.01in)
Plating/Coating: Ni-Cu-Ni (Nickel)
Magnetization Direction: Axial (Poles on Flat Ends)
Weight: 4.3 g (0.15oz)
Max Operating Temp: 176ºF (80ºC)
Pull Force: Approx. 10 lb (4.5 kg)

Material Features:
Neodymium (chemical symbol Nd) is element 60 on the periodic table. It is a rare earth metal and forms one of the Lanthanides series. When added to Iron (Fe) and Boron (B) (chemical formula Nd14Fe21B) the resultant magnets are the strongest magnets currently available. Neodymium magnets are sometimes known as Neo, Neod or NIB magnets.
Neodymium magnets are usually coated Nickel-Copper-Nickel plating to prevent the iron from rusting.
Neodymium magnets are made of a brittle material. These magnets are not as strong as steel. They are more like a brittle ceramic. If you let two magnets slam together, they can crack and break. This is true for magnets large and small.

WARNING!!!
Strong magnets should Keep away from Ironware and some easily magnetized iron products, such as monitors, bank cards, computers, televisions, mobile phones and other.
These magnets are very powerful which should be handled with great care. Without parents supervised do not allow children to playing magnets as they could get injured. Especially pay attention to the small magnets , please place in somewhere children can't reach place.



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    (1)
    This order arrived and was exactly what I ordered. The original order was lost in shipping, but did arrive one day prior to replacement. I contacted the company and they shipped me a replacement same day. Thank you for your attention to detail and these magnets are perfect for holding on numbers during horse shows. They are wonderfully strong and prevent holes in expensive clothing caused by pinning.
    Mar 6, 2017 by chinoskyhockman59

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