Condition: brand new

Shape: disc

Dimension: diameter 4mm x thickness 2mm

Tolerance: +-3mm

Material: Neodymium Magnets


Magnetization: poles on largest surfaces

Max Operating Temperature: 80°C/176°F


NOT use to water meter ,gas meter ,electric meter ，it is harmful to your country . and i can not promise to stop any meter deviece.
Sometimes one of hundred will be like that surface and side maybe 1-2mm tolerance or Groove . we will be so sorry for it ,but it will be aslo strong ,and not affect to use . so please understand it .it is normal .