1. Application: Suitable for children and adults, very suitable for learning science, pass boring time, release stress, it is a good gift for birthdays and holidays.
2. Good performance: It not only shows pendulum, but also shows the law of conservation of momentum and energy.
3. Compact and portable: being so mini and light-weight, this product does not take much space and can be easily taken away.
Specification:
Material: Metal,Steel ball,plastic,fishing line
Type:Square Fun Balance Balls
Size:9cm x 7.5cm x 9cm/3.54" x 2.95" x 3.54" (Approx.)
