The magician shows two silks, a black and a white one and pushes them into his fist.
He is then able to show that they have changed into one larger Checkerboard silk.
You receive 2 12″ Silks (one white and one black) and the 18″ checkered silk.
No instructions supplied, you will need a large dye tube or small change bag if you do not know a sleight of hand move.