This is a set of cards, that can be used in many ways. perfect utility card that every mentalist must have. You will get a set of 10 blank plastic-coated cards 5 red and 5 blue, they are cleverly marked on the back so you can identify it easily, Many effects can be possible with this set like a few names are given below Symbol or ESP match effect Psychometric ( detection ) card effect Number choice effect Or one can create his routine These are the long-lasting plastic laminated cards, 100% reusable. You can use a whiteboard maker or wet-erase, no stain on cleaning ( for better cleaning you can even use nail paint remover ) Comes set of 10 blank cards in a plastic carrying bifold wallet, without any instructions. The marking system is very easy to read and understand.