easy_company Diameter Ceramic Disc Magnets, Science Project, Crafts ~Bulk Lot 20 pcs.(Diameter 25mm (0.984 Inch)) Great for all home, office, craft, hobby, science projects and product manufacturing applications. Not a toy, for craft, science or production use only. 25 mm.(0.984 inches Diameter, Flat Disc Magnets with Beveled Edges)