A fun and stimulating challenge: first, grab the two cord handles.
Spin (wind) the disc away from you: this stores kinetic energy in the twisting nylon cords.
Then quickly pull the handles away from each other repeatedly.
The energy in the cords is released, causing the discs to spin.
Watch the sound & light show! Try to control the speed!

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 4.72 inch
Height : 1.97 inch
Length : 5.04 inch

Item Weight: 1 pounds (View shipping rates and policies)
Shipping Weight: 1 pounds (View shipping rates and policies)

ASIN : B01M6BSRCZ