Ricoh FT4421 OPC Drum ( A0069510 ) (Inception ref. No.) K- FT4421 - 70018646 Drum reduces noise in selected applications. Priced per Drum, sold per Drum. For Use In Ricoh FT 4415, FT 4418, FT 4421, FT 4460 Manufactured by Kantun, the worlds leader in compatible parts & supplies