Do it Wiser Compatible Toner for Ricoh Aficio MP C5000 MP C4000 Lanier LD540C LD550C | 841284 841287 841286 841285 (4 Pack) Estimated page yield: Black 23,000 pages and Colors 17,000 pages (depends on printer and usage) Compatible with part number: 841284 841287 841286 841285 Suitable for printer models Ricoh Aficio MP C4000 | Ricoh Aficio MP C5000 | Lanier LD540C | Lanier LD550C Our Do It Wiser smart toner cartridges are covered by a 1 year warranty against defects Cartridges certified to work | ISO 9001 quality assurance | ISO 14001 environmental management | RoHS Lead Free 1 Black23,000pages 3 Colors 17,000 pages Ricoh Aficio MP C4000 Ricoh Aficio MP C5000 Lanier LD540C Lanier LD550C 841284 for Black 841287 for Cyan 841286 for Magenta 841285 for Yellow