Inhibitor Collar

The inhibitor collar is a device used to suppress mutant abilities.

History
The collars were designed by Gottfried Adler for Leader of Genosha. They were used to turn captured mutants into a slave force. All the collars could be controlled by remotes and turned on and off at will. Jubilee eventually got ahold of a remote and freed the slaves from the collars. They were likely all destroyed.

Background
The specific name of the collars was not mentioned.

The collars were used in the Days of Future Past story seen in Uncanny X-Men #141 and #142.