Magnets Coated - Ni+Cu+Ni Triple Layer Coated. The Best Coating Available, which Provides a Shiny and Rust Resistant Protection for the Magnets. Strong Rare Earth Magnets - Made from Strong Magnetic Material, these magnets offer concentrated and durable magnetic force. Perfect for securing photos, lists, and tools—ideal for home displays, workspace organization, and creative projects. Magnets Dimensions - Diameter 32mm x Thick 3mm (approx. 1.26" x 0.126" ). Tolerances: 0.2mm x 0.2mm. Diy Projects & Science Experiments - Refrigerator Magnets, Shower Door, Work or Office, Scientific Purposes, Arts and Crafts or School Classroom. Multi Use - This super strong neodymium disc magnet with Epoxy Coating is made of rare earth materials, which has the powerful ability to attract all kinds of iron materials. With our free double-sided adhesive tape, it can be applied to almost all kinds of scenes in life,example for Refrigerator Magnets, DIY,Shower Door, Work or Office, Scientific Purposes, Arts and Crafts or School Classroom,etc.