Metal caps are a basic type of headgear in ADOM. Their stats, and weight, depend on the metal they are made of. The basic iron-made metal cap has base stats of [+0, +1], the mithril and adamantium caps have [+0, +2] (a puzzling anomaly, as adamantium is usually superior to mithril), with the eternium cap clocking in at a respectable [+0, +4]. These caps are otherwise entirely mundane, though mithril and better caps are invulnerable to fire.