Dimension specifications：9cmx6.4cm

Material：(general, bicycle )card

Weight：61g

 Let the audience to pick out two cards, with four pieces of printed incorrect card into the audience refers to sign shake, four pieces of printed incorrect card immediately becomes the same with the selected  two cards .It will get the same effect when placed these four cards on another card. This set of magic can also be changing into the card back, even into the whiteboard is also possible. The so-called three change, be worthy of the name: Tri-changeable Card！