This is the classic rope magic effect where three unequal lengths of rope are magically made to become the same length right before the spectator's eyes. Very easy to do and makes you look like you really know what you are doing.
The routine is essentially the same as "Professor's Nightmare", but different handling of the ropes is used.
If you live in Guam and purchase this effect you can come by the magic shop when the magician is there (you can make an appointment), you will receive free personal instruction on how to use the same ropes for another trick. Therefore you will be getting two magic tricks for the price of one. You must bring in the ropes you purchased though.