This is a 4-pack of compatible Black Laser Toner Cartridges for Canon NP6025, NP6030, NP6330 printers. It is designed to replace Canon 1377A002AA toner cartridges for crisp detail, sharp text and clear graphics. MTI printing products give you consistent, professional results at 40-60% of OEM prices. MTI toner cartridges are engineered to exceed industry standards of high yield and exceptional quality, and guaranteed to perform with Canon Laser Printers. Every cartridge is factory tested and ISO approved. We offer an exclusive 30-day customer satisfaction guarantee and 1-year 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.