AN EXCELLENT POCKET BAFFLER!
You show a small block with two holes running through it, as well as a larger tube with holes also through it.
The smaller block is placed into the larger tube so that the holes line up.
Then a solid metal rod is inserted through all so that the ends of the rod extend as in photo. This holds the smaller block in place.
A spectator firmly holds the end of the rod. 1-2-3! and the block PENETRATES & FALLS FREE OF THE ROD, right out of the tube!
NOTE THIS: Only one block used. No switching. Nothing added or taken away. EASY TO DO & ALL CAN BE EXAMINED!
BUY TWO HAUNTED BLOCKS, AND GET A THIRD ONE FREE!