Buy HP - Hewlett Packard C6451A-COVER_CARTRIDGE
This is the cover/ door that is opened to remove the cartridge(s) - usually, when this door opens the carriage moves. For DeskJet 612C
HP - Hewlett Packard
OEM (Original Equipment Manufacturer) - this item is the original item from the manufacturer sold as brand new.
Refurbished is the process of reselling an item that had been in good working order. Refurbished items are dis-assembled and restored to "like new" condition.
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