This set comes in the 8 piece poly set needed for D&D and other RPG systems: a 2d20's for advantage, a d12, a d10, a d8, a d6, a d4, and a percentile die in a custom-crafted metal storage tin complete with heavy-duty protective foam to keep them safe when not battling evil!
Unlike regular dice, this metal set is die-cast in zinc allowing these solid metal polyhedral tumble across the table unnerved by anything crossing their path. It's also why we recommend getting adice traywith them!
Crafted by the famous smiths of the Mythril Halls, these dwarven-made clockwork dragons are forged from precious metals mined deep below the ground and crafted into giant mechanical beasts used to defend the dwarven halls from the denizens of the under-dark. At least that's what our DM told us!