You will hardly believe your eyes when you see how easily a solid pencil is stabbed through a transparent plate, captured in a triangular frame. The mid section of that plate was covered earlier, by a piece of paper. When you remove the pencil, the frame and plate do not appear to have any openings, but still there is a hole in the paper. An impossible penetration! Moreover, everything can be handed out for examination. 'Wow!' What else is there to add?

Very nicely made. Incredibly ingenious! 'Mystery Triangle' doesn't give its secrets up easily, and can be examined right after your performance!