On May 31, one of WWE's most treacherous, brutal contests — the Elimination Chamber Match — makes its return to pay-per-view.

The imposing structure must be transported on a flatbed truck, and it takes eight hours to set up in the respective arena. The chamber itself is made of black-painted steel with 16 frames, each weighing 300 pounds. Eight motors are needed to suspend the massive structure over the ring for each event.

Watch every Elimination Chamber event on WWE Network

In the Elimination Chamber Match, six Superstars will enter this heinous structure — which is composed of two miles of chain and 10 tons of unforgiving steel — but only one can emerge victorious.

Here are the rules:

• Two Superstars will start the match while the remaining four are enclosed in glass pods.
• After a regularly scheduled period of time, a pod will open at random, enabling a Superstar to enter the match. This will continue until all the competitors have been released.
• A man is eliminated via pinfall or submission only.
• The last man standing is the winner.

Tune in to WWE Elimination Chamber, live on WWE Network on Sunday, May 31, to see this chaotic, physical match and much more.