The performer shows a wooden frame on both sides containing a sheet of plexiglas.
A small cover with three holes is now placed over the center of the glass.
The performer now pushes a brass rod through the hole in the center of the cover.
Two further rods are now inserted through the remaining holes.
The performer now pulls all the brass rods out and immediately removes the cover to reveal that the sheet of plexiglas is completely undamaged
It looks impossible with no explanation as too how the brass rods could have penetrated through.