Easy to recognize north pole North pole side of magnet is marked so you can apply the magnet easily to the correct side Scratching Protection Flat disc magnets with beveled edges to protect surfaces from scratching High resistance to corrosion and oxidation Ceramic/ferrite magnets are made by the pressing and sintering of a powdered mixture of strontium and iron oxide Strength rating Strong - 2800 Gauss, Grade 5 Ceramic Resistance high temperatures Although their magnetic properties drop with temperature. At 175° C (350° F), approximately 75% of their room temperature magnetic properties are retained Tidy and easy to carry Magnets are contained in a clear plastic box, It can keep magnets tidy and box not easy out of shape Perfect for crafts and hobbies Each boxes comes with 20 pcs super adhesive glue dots, perfect for crafts and hobbies Multiple Uses Great for all Home, Office, Craft, Hobby, Science Projects and Product Manufacturing applications. Ceramic Magnets are perfect for glass gems, mirrors, for making refrigerator magnets, bottle cap magnets, small signs, magnetic buttons, and more others. Dimension Package size 80mmX80mmX30mm
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