and high quality. First magician takes out a black ball and let the audience check it. Then magician turns back. The audience is asked to put the ball in one of his hand. Next magician asks audience to stare at the eyes and make an induction. Then magician knows which hand the ball is in. This magic trick can be showed in anywhere. Everything including magician’s hands can be checked by audience.  You don’t need an assistant.The common clothes are OK. The prop is reusable. Material:Plastic,magnet Color:As the pictures show Ball size:2cm/0.78" Note: *Manual measurement,please allow 1mm error. *The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Package include: 1 Set Magic Induction Beads Ball