These are small, muffin pan TB's that contain a coiled quartz crystal, copper, aluminum, polyester resin and a powerful neodymium magnet in the base. They will stick to your refrigerator, a street sign, a steel pole, like the kind that support bad things, or anything else a magnet will stick to. Use your imagination! (Boss's file cabinet!) They come in my special, violet-tinted, resin. These Magnetic TB's are only $10 each. Buy them by the dozen!