Includes 8 large neodymium magnets (15mm x 0.8mm). The ultra thin magnets provide just the right amount of magnetic pull to create interactive elements on your craft projects. WARNING: Use with extreme care. Neodymium magnets are strong, brittle magnets that need to be handled with care to avoid injury. Keep away from children, adult use only. Strong magnets may be harmful to pacemakers. Imported.