These dice have all the beautiful jingle (sometimes known as 'singing dice' or 'musical dice') of a nice hollow metal set, but rather than being truly hollow, there is a 3d Chromatic Dragon appropriately trapped inside the cage! These dice are manufactured using a 'lost wax casting' process. One order is one set of 7 dice, MSRP $75 Comes in retail packaging (window box), and being hollow, these dice don't require a substantial rolling tray, although we do still recommend at least some kind of surface to protect your table. Caged Octopus or Skeletons also available in separate listings.