If it is too tight, gently tap the bolt head with a hammer to make it vibrate, or drop a few drops of balsa wood, coal, sewing machine and other oil products on the screw hole, or spray a self-spraying rust remover on the screw hole, it will be easy to remove.

Gyro is a kind of folk sports activity in China, which integrates entertainment and fitness. It can exercise human coordination and wrist strength, and cultivate keen observation. Covering a small area, you can exercise anytime and anywhere, suitable for all ages.