For the similar material in Xenoblade Chronicles X, see Gray Shell.
Grey Shells are common materials in Xenoblade Chronicles. They can only be obtained from Mount Tortas on Bionis' Leg.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.