Premium Quality 841849 High Capacity Black Toner compatible with the Lanier MP-C4503, MP-C5503, MP-C6003, Aficio MP-C4503, Aficio MP-C4503SP, Aficio MP-C5503, Aficio MP-C5503SP, Aficio MP-C6003, Aficio MP-C6003SP, MP-C4503, MP-C4503SP, MP-C5503, MP-C5503SP, MP-C6003, MP-C6003SP. The use of compatible supplies does not void your printer warranty. Product Detail Ninestartechonline.com