A spectator signs a bill and places it under a red cloth. The spectator is also given a brass tube sealed with a lock. The performer then takes the red cloth away to reveal that the signed bill has vanished! The spectator is given a key and unlocks the tube. Inside, is the spectator's signed bill! EASY TO PERFORM!!!! Comes with special cloth and simple to learn illustrated directions! And if you know how a bill tube works, think again, our gimmick is INVISIBLE to the eye!