OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Open Ball Battery Change

OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Opener Ball Battery Change

Features

• The ball is already full of air + 1 ball needle
• Great for opening watch cases , Hold the watch in one hand and in the other hand, press the friction ball onto the back of the watch.
• Start twisting to unscrew the watch back.
• 2-1/2 inches in diameter
• and you can fill air by the basketball pump yourself if need full air