This came from an old magician’s estate buyout. The set is not complete or accurate as to what is described on the packaging box.
The end of the box says the trick is made in metal and plastic. The tube is made from heavy cardboard and the two red blocks are wood. Both red blocks fit into the tube and will not pass through. The other two colored blocks (that would have passed through the tube) are missing and is the way we acquired the trick.
Maybe some collector has a use for these items.
The red blocks measure 3/4″ long and are approximately a little under 5/8″ in diameter.
The cardboard tube measures 4″ long and is approximately 5/8″ inside diameter.
Selling as is.