Ferrite Ring Large Magnet,4.72In Dia Big Round Ceramic Disc Heavy Duty Magnets with Hole for DIY Crafts Science Projects Industrial,Large Ceramic Donut Magnet
【SIZE】The ceramic hard ferrite magnets with hole measures OD:120mm x ID:60mm x 20mm(4.72"x2.36"x0.78")
【POWERFUL】Made of the highest grade of ceramic magnet material. Grade 8 which is Stronger than Grade 5, Internal Gauss=3,850 Gs.
【FEATURES】Low cost, high-energy, good electric insulation and excellent resistance to demagnetization. High coercive force, high electric resistance, long-time stability, and econ.
【APPLICATION】This donut magnets has industrial strength and it is suitable for various DIY projects and science project magnets.And the Large round magnet with hole won't rust, so they are ideal for outdoor and underwater projects.
【CAUTION】 The big ring magnet has strong magnetic force.Be careful of fragile, careful of hand injury, dry storage.
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