Angainor

In the fiction of J. R. R. Tolkien, Angainor is the chain used to contain Melkor (who was later known as Morgoth) in the Halls of Mandos. It was constructed by the Vala Aulë and held Melkor for three ages. At the end of the First Age, Melkor was again bound by Angainor, and his iron crown was made into a collar.