The core is some kind of fairly dense metal (possibly iron/steel?) and then has different metals on top to colour them. I chose copper and gunmetal colouring.

  • I didn’t try them in a tower yet, but they roll OK in a padded dice tray I have. Something that has a bit of a grip on the surface (pseudo-leather in my case).

    On a flat desktop or other hard surface they don’t roll worth a damn. They slide. 🤣