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 sold from the manufacturer.
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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