Power magnet, Disc 12x10 mm.

Power magnets are made of neodymium, which is the strongest known magnetic material. If you are looking for a magnet, which is able to hold on to more than just a piece of paper, then look for power magnets.

Diameter: 1.2 cm. 
Height: 1 cm. 
Strength: approx. 5.3 kg.

This size is strong enough to be used on a magnetic glass board. But if you only have to hang up a single piece of paper, this magnet is a bit too strong - it's able to keep a wide piece of cardboard stuck to the board.

Take care of your fingers when you have to split two of these magnets - slide them in opposite directions (it's not possible to pull them from each other).

SPECIFICATIONS:
Strength: approx. 5,300 g.
Material: NdFeB
Magnetisation: N45
Gauss: 13200-13700 (1,32-1,37 T)
MGOe: 43-45
Max. temperaturee: 80°C
Surface: nickel-plated (Ni-Cu-Ni)