ITEM NAME:Watch Back Case Opener Sticky Friction Roll Ball Screw Repair Remover Ew.It's smart design allows it to fit and evenly grip the surface, giving it more strength yet never scratching your watch. Easy to use; simply squeeze, press, then turn. This is a tool, not a toy ball (maybe you can make it as a tool and a toy), only use to open the Screwthread watch back case.
