Mansions of Madness 2nd Ed: Dice Pack: - Rules of Play says:
This set of custom dice will allow you to immerse yourself even deeper in the horrors of Mansions of Madness Second Edition. Seamlessly progress through each and every battle and skill test by keeping six additional dice, identical to those included in the core game, close at hand. With the exceptionally convenient Mansions of Madness Second Edition Dice Pack in your collection, you can dive headfirst into the gameplay experience, fighting off gruesome monsters and swiftly solving tricky puzzles without interruption.