Invisible Card Punch by Dave Powell

Another fine product from Powell Magic! With the Invisible Card Punch you will be able to achieve amazing card effects by making a small bump on any card. You can now mark the cards before performing or secretly mark a card anytime you wish, right in front of the spectator's nose. By replacing a small amount of reusable adhesive Handitak or magician's wax on the back of the gimmick, it will stick to your thumb or index finger. Now you can have a spectator freely pick a card and secretly mark it! This will be your secret weapon for years to come!