Super Magnets Warning: These Magnets really are Super Strong. Do not let them contact each other because you will have a very hard time separating them! The Perfect way to make washers, steel shim coins & other small metal object appear and vanish. Includes: Two, nickel- plated neodymium rare earth magnets. Measuring 1/2″ in diameter & Only 1/8″ thick, these Magnets are very thin & extremely Powerful.(Pull Force is 6.1 Pounds) Warning:Because neodymium magnets are so strong fingers can be severely pinched between two attracting magnets. The strong magnetic fields of these powerful magnets can also damage magnetic media such as computer discs, credit cards, cassette tapes, videotapes, etc. Keep neodymium magnets away from these items. (Don’t try to pull these magnets apart, slide them apart only).