The lens invented by Lubor Fiedler always amazes.

The magician places a pen on the tips of the spectator's extended fingers and covers it with a transparent plastic card.

The pen is clearly visible under the card.

After a brief moment, the magician rotates the card and makes the center of the pen completely disappear.

The spectator will see the center of the pen vanish before their eyes, allowing them to see only their fingers under the "invisible" pen.

They can even open and close their fingers while the center of the pen remains completely invisible.

The magician then returns the transparent card to its original position, making the center of the pen reappear.

The transparent card is the size of a credit card and can be easily stored in a wallet.

You can make the center of any pen disappear (even a borrowed one).