Cages Pack is part of the Dungeon of Doom series. It is made of "Dwarvenite" and includes some metal and magnetized parts. This item was initially available as an add-on pack during the Dungeon of Doom Kickstarter. The item comes in both painted and unpainted versions.
Cages Pack comes with these 8 pieces:
(2) Cage Corner
(3) Cage Wall
(2) Cage Door
(1) Magnetic Manacles