The great Magi shows three pieces of rope each a different length. One short - one medium and of course one long. He takes the ends, three in each hand and pulls... To the surprise of everyone the pieces of rope seem to stretch until they are all the same length. After showing each rope clearly now the same length you reverse the process and each rope returns to it's original size and of course all three pieces can be minutely examined. Easy to do and a real stunner one of the great classic tricks of all time. You've simply got to have it.