This model is perfect for stress relief, sharpening focus, calming the mind, or simply enjoying a satisfying and engaging play experience.

Derived from the rack gear fidget concept, this model incorporates a rubber band mechanism. Spinning the spur gear pushes the rack gear downward, storing energy in the rubber band. One of the spur gears, with only two teeth, allows the stored energy to release, pushing the rack gear back and enabling it to hit the ball for a fun and dynamic interaction.

Here's the items you need:

• Ball (6mm - 7mm, you need to push into the track)
• Rubber band
• Nail (1.2mm diameter)

You may use the "Assembly View" button if you have no clue how to put them together.

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