This is a different and off beat card item, based on Star Gate.
In effect performer displays two jumbo size cards, with a large hole in the middle, and joined together at the edge of the hole.
The cards are red on the outside, and green on the inside, with the outside marked "OUT", and the inside marked "IN".
And sandwiched between the two cards is a white card. The object of the trick is to remove the white card without tearing it.
The spectators will not be able to do this, unless they know the secret. You explain it is very easy if you turn the cards inside out, because then whatever is on the inside will now be on the outside.
As you say this you actually turn the cards inside out in a magical manner so that the white board is free.
And the colour of the cards outside is now inside and vice versa.
You can perform this without the white board, and just the cards turning inside out is quite a magical effect by itself. Inside Out Card Trick is well made, silk screened on art board, and comes to you complete with instructions, ready to use any time, under any performing conditions.