This is a 2-pack of premium compatible Black Laser Toner Cartridges for HP P1005, P1006 printers. Each black cartridge is custom built to replace HP CB435A toner cartridges. The MTI © Compatible CB435A Toner Cartridge produces crisp detail, sharp text and clear graphics. Our 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 Brother Laser Printers. Every cartridge is factory tested and ISO approved. We offer an exclusive 30-day customer satisfaction guarantee and 1-year Manufacturer 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.