An intriguing experiment in the science of sonic waves. When you wave these sound tubes around, you produce a spooky whistling sound effect. You can manipulate the noise by varying the speed and trajectory of motion. Each unit includes 24 pieces in colorful display box. For ages 5+.
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Vikram D.
The MOLLE sheath is of exceptional quality. Very happy with my purchase.
2 weeks ago
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Customer service was outstanding when I had questions about the product.
