This is one refurbished Stenograph® Stentura® ribbon cartridge. The Stentura® "clean hands" cartridge easily inserts into Stentura™ shorthand machine without getting ink on your fingers. Will work in any Stentura®, Protege, Fusion or ProCAT Flash writer. We take used ribbons that are still good(ribbon is not frayed) and refurbish the ink spool with fresh ink giving them renewed life. These are guaranteed to work when you receive them.