There are a wide variety of these types of chairs, but they all have a fw things in common. They all have spikes that cover the back, arm rests, seat, leg rests, and foot rests. The normal number of spikes on a chair such as this is close to 1,500.

The victim was strapped in and tied while two bars pushed the arms against the arm rests pushing the spikes into the flesh even further. There were also holes in the chairs bottom so that a fire of sorts could be built and the victim’s bottom was burned.