Space Wonder Gyroscope - Black Black Space Wonder Gyroscope - Metal and plastic. Comes in clear, hard plastic gift box Great Science Toy -Perform balancing tricks with this 3 1/2" gyroscope. Precision balanced, quality parts. Learn about Gyroscopic Forces and Motion Box measures 4" x 4" x 4". Includes string, stand and instructions. Great Science Toy -Perform balancing tricks with this 3 1/2" gyroscope. Made in Italy