Parameter: Material NdFeB, Grade N35 Shape Rod/Cylinder Diameter 1/8 Inch (3.18 mm) Height 3/8 1nch (9.53 mm) Tolerance +/- 0.05 mm Coating Nickel-plated(Ni-Cu-Ni) Magnetisation Axial (Poles on Flat Ends) Strength aprox.300g Surface Gauss 4214 Gauss Max. working temperature 80°C / 176°F Weight(1 piece)0.6 g