After the events of 'I, Borg' Hugh 'infects' the Collective with a sense of individuality, creating a Borg faction that falls prey to Lore. These Borg renegades had an unusual asymmetrical ship that reflected their fractured identity. The ship was designed by VFX supremo Dan Curry, who started by building a study model.  The model is  slightly over 2.25" (6 cm) across.