This is a 2-pack of MICR Cartridges for HP LaserJet P1102, P1102W, M1212NF, M1217nfw series printers. It is custom built to replace HP CE285A toner cartridges. MTI © economy MICR Cartridges deliver quality MICR output and excellent toner yield, at an exceptionally low cost per page. All our products are factory-tested, ISO approved, and guaranteed to perform with HP LaserJet Printers. We offer an exclusive 30-day customer satisfaction guarantee and 1-year limited warranty. Our dedicated customer care staff is available 9 a.m. to 7 p.m, Monday through Saturday, to answer any questions and provide technical support.