This is a helm add-on for Titans Return voyager Galvatron, mini-figure Nucleon! It fits snugly on Nucleon in head mode with no modifications required. When not in use, it can store in Galvatron's chest cavity behind the original mask.
It can be used on other Titan Master minifigures, but fit is not optimal.
This model has been successfully tested in Purple Strong Flexible Polished.