High Quality- Made From Strong Neodymium-Iron-Boron Alloy (Ndfeb) And Have A Stylish Nickel Coating (Ni-Cu-Ni) With An Appealing Silver Surface - All The Magnets Are Magnetized Axially And Have A Maximal Operating Temperature Of 80 Degrees Celsius.
Extreme Durability - Nickel-Copper-Nickel Triple Layer Coating For Superior Durability.
Multiple Uses - These Magnets Are Ideal For Diy Craft Projects,Science Project Magnets. Use These Rare Earth Magnets For Anything, Including Finding Studs In Your Wall, Fastening, Lifting,Hanging Objects, Various Projects & Presentations, Education, & More.
Dimension - Diameter 40Mm X Thickness 20Mm(Approx.1.57"X0.79" ).Tolerances: (+/-0.2Mm) X (+/-0.2Mm).