Features:

Super strong rare earth neodymium magnets
they are hard to separate once they get attracted with each other.
It's perfect for wind generators， DIY projects， science projects etc.

Shape:Block
Size:Dia.Length 30mm Width 20mm Thickness 5mm
Material:Nd-Fe-B magnets
Grade:N50
BR:14000-14500 GAUSS
Hcj≥12KOe
Hcb≥10.8KOe
BHmax:48-51MGOEe
Max Operating Temperature: 80 Celsius degree / 176 Fahrenheit degree
Plating: Nickel+Copper+Nickel triple layer plated

Caution:

strong magnets are brittle;
strong magnet could pinch your fingers badly;
if you allow two magnets attract together，
it may cracks and the chips could hurt your eyes.

Package include

2xMagnet