Gyroscopes are generally bell-shaped and made of the trunks of guava, longan and other trees. It used to be cut. With the development of technology, there are now large-scale solid wood gyroscopes made by machine lathes. The dimensions and specifications of solid wood gyroscopes can be divided into the following categories:

1, subminiature gyro: about 1 cm in diameter, smaller than a finger.

2, small gyro: the diameter is about 4 to 5 cm, which is generally played by children under the age of ten. Small wooden gyroscopes can be divided into three types according to the tip shape: pin-nail gyroscope, sword-nail gyroscope and axe-nail gyroscope.

3, small and medium-sized gyro: the weight is below 10 kg, and the older children are more powerful and will play this.

4. Medium-sized gyro: the weight is about 15 kg to less than 30 kg.

5. Big gyro: the diameter is more than 45 cm and the weight is more than 3 1kg. It is a large gyro suitable for adults.

6. Extra-large gyros: The weight is about 50 kg, and some large gyros weigh more than 70 kg, which is called "king of gyros".