Specification: 
Material:   NdFeB

Shape:    Round
Grade:    N50
Plating:   Ni-Cu-Ni ( Nickel )
Color:  Silver
Diameter: 12mm
Thickness: 3mm
Quantity: 5pcs
Magnetized direction: at both ends of the N S pole
Operating temperature: ≤80℃
Note:7+ ages, strong magnet,Be careful when use.
 
Please be care when  break apart  because Neodymium block magnet have strong Magnetism.

Features:
Super strong Rare-Earth magnets -
once they get stuck with each other, they are hard to break apart.
Can also be used to extend protected lithium batteries with recessed contact points.
Electrically conductive (making them suitable to extend recessed batteries).
Perfect for sticking notes on fridge doors.
Great for do-it-yourself projects.

Package Included:
5x   Magnets