Singing Buzz Magnets Sizzling Rattlesnake Egg Vibrating Noise Making Magnetic Buzzing Magnet 2 pack of Singing Magnets-measuring 2 1/2 inches in length. Fits in the palm of your hand. They sizzle like Rattlesnakes Toss them in the air to make them twirl, spin, dance and sing Toss them in the air to hear the great buzzing/cicada-like sound they make as the attracted magnets move toward each other. This great novelty gift can even be stored on the fridge for an easy find!