Ferrite Magnet Ring OD80 x ID40 10mm Large Grade C8 Ceramic Magnets 3" Heavy Duty with Holes (Pack of 2)

Hard Ferrite Ceramic Magnets: Pack of 2,OD80 x ID40 x 10mm (OD3.1”x ID1.57”x0.39”).An Economical Solution for Arts & Crafts. Strength & Durability: Our ring circular magnets have high resistance to demagnetization, corrosion & oxidation. The power exists forever under 200°Temperature. Grade C8: One Of the Strongest Grade Ceramic Magnets Available With a Gauss Rating of 3,950. Low cost but high strength magnet . Easy to Use: The ring magnets for crafts has a smooth and rust-proof surface and can be attached to any non-metallic surface or metal surface with adhesive. This process donut magnets has industrial strength and it is suitable for various DIY projects and science project magnets. Multipurpose Magnets: Circular Ferrite magnets are used to hang and hold various metal tools and make various DIY science projects.