Maximilian Grabner's Jacks

Origin
Maximilian Grabner was a Gestapo chief in the Ausschwitz concentration camp during the Nazi occupation in WWII. He ruled over the infamous torture chamber, Block 11. Under his command, prisoners were tortured in a variety of ways, including being denied sleep, food and sometimes through direct pain. Often prisoners were cleared from the bunker and shot in the courtyard.

This set of jacks was used by Grabner and his guards during breaks and absorbed his sadistic and homocidal tendancies.

It, among other artifacts, was traded by Artie to the Soviets during the Cold War, in exchange for the safety of his family. It is seen among other torture artifacts in "Vendetta".

Effects
When one of the six jacks is forced into a victims hand, their hand will lock into place around it, preventing it from being released. Every time the ball in the set is bounced, the holder of the jack will experience a wave of pain through their body, reportedly similar to a high voltage shock. The more bounces the ball makes before being stopped, the more intense the pain until the victim loses consciousness, whereupon they will be able to release the jack. Multiple jacks may be used on several victims at once, but effects do not stack on one person.