AOMAG 60 Pcs Strong Ceramic Industrial Magnets with Adhesive Backing: The magnets with grade 8 ceramic composition have good holding power. Ideal craft magnet and industrial magnets for most craft and product applications. You can glue them onto any surface,such as glass gems, mirrors. These are high quality and strong for their size. They fit most adhesives including hot glue, E6000, Goop, Bond 527, Liquid Nails, 2 part epoxies and more. Great for making refrigerator magnets, bottle cap magnets, small signs, magnetic buttons, and more! Note: Not a toy, please keep children far away from the products. Including: 60 x Magnets with Adhesive Backing