A high-capacity replicator able to manufacture heavy equipment and infrastructure, twelve of which the Federation sent to Cardassia in 2372 only for Michael Eddington to steal them for the Maquis.
Industrial replicators are far larger and more capable than the food and tool replicators of a starship. They can turn out machinery and building components in quantity, and a handful of them can restart the economy of a damaged world. That makes them valuable and closely guarded.
In the Deep Space Nine episode For the Cause, the Federation agrees to supply twelve of them to the Cardassian Union, which has been devastated by the Klingon invasion. The shipment is to pass through the station under tight security.
While Benjamin Sisko is drawn away to intercept Kasidy Yates, who has been smuggling for the Maquis, his own security chief Michael Eddington seizes control of the station, takes the replicators and defects, beginning a long feud between the two men.