This is one of the routines that started the whole "spectator sees nothing and is fooled while the audience sees how it works" routines.
I ring (much like a linking ring without the gap) links on and off a spectator's locked arms multiple times, in impossible ways.
To see Jay Marshall perform his version of this, click HERE.
USED, 10 pages. Instructions only, no props (use any 7" or bigger ring).