This is a very nice twister built by Mark Evans.  It's in great condition and comes complete with 2 ATA cases.

Effect:  Your assistant is introduced into the cabinet and the front doors are closed.  Her face is visible in the top box.  You then turn the top box around 360 degrees several times.  When the front doors are opened, her mid section is twisted up like a rubber band!

Great comedy illusion for a great price!!