Dwarvish Helm
It's one of the helmets commonly worn by dwarves. The thick metal plating protects them from falling debris and stalactites.
Overview
The Dwarvish Helm is an item that can be donated to the Museum, contributing to the total number of museum donations. It has no use in bundles, quests, or recipes.
Dwarvish Helm can also be used in tailoring. Placing it in the spool of the 
Official description
It's one of the helmets commonly worn by dwarves. The thick metal plating protects them from falling debris and stalactites.