Our HP Q7551A Toner Cartridge Black carries a lifetime warranty. Lifetime Warranty (One-to-one exchange if toner having problem) Toner Model: HP Q7551A (51A) Page Yield: 6,500 pages @ 5% average coverage Color: Black Capable for Printer Model: HP Laserjet P3005 / P3005d / P3005n / P3005dn / P3005x / M3035 / M3035xs / M3027 / M3027x / M3035 / M3035xs / M3027 / M3027x 100% Guaranteed Premium Brand New Toner Cartridge. Best price value for you money. EVERPRINT Promised for Premium Quality, High Reliability, High Quality Prints, Quick Delivery. Our supplier manufacturers adhere strictly in accordance with the standard and request of ISO9001 and ISO14001. There are many grades of compatible toner cartridges, we only choose the best premium quality over price. Almost all of EVERPRINT compatible cartridges last longer than the original brands. This is a High Quality HP Q7551A Black Compatible Toner Cartridge 51A that guaranteed to perform with your HP printer. Our compatible toner cartridges and supplies are specially engineered to meet the highest standards of quality, reliability and exceptional yields that meet or exceed OEM (Original Equipment Manufacturer) standards and offer high-quality printing results. Each HP Q7551A Toner Cartridge Black cartridge passes our rigorous post production inspections in real test printers before it is packaged. We offer a 100% Quality Satisfaction Guarantee on our compatible toner cartridges and supplies. We also ensures High Quality Prints for our valued customers every time.