Amazon.com: SP4520 Compatible for Ricoh SP 4520DN MP 401SPF MP 402SPF Printer - High Yield 21000 Pages Black Drum Unit Replacement for Ricoh M9060136 with chip - Suitable for Office Bank Home (
Amazon.com: KROKII for Ricoh SP4520 Toner Cartridge Compatible Used for SP4520DN MP401SPF MP402SPF Printer 2 Black : Office Products
RICOH SP-4520 MAINTENANCE KIT SP4520
Amazon.com: RIOMAN SP 4520 Drum Unit High Yield Compatible for Ricoh SP 4520 Drum Unit Work for Ricoh MP 401SPF MP 402SPF SP 4520DN Printer 1Black : Everything Else