These high quality HP C4129X Genuine OEM Toner Cartridges deliver first-rate quality, outstanding value, and the convenience of speedy front door delivery for the home or office user - our typical ASAP Inkjets customer. These Toner Cartridges were produced under strict quality standards, in a manufacturing facility using state of the art production techniques and equipment and with a focus on delivering a cheap high quality print cartridge. Besides the outstanding print quality our customers have come to expect, these C4129X Genuine OEM Toner Cartridges also offer you an economical alternative to expensive retail store prices for OEM (Original Equipment Manufacturer) C4129X. All of our C4129X Genuine OEM Toner Cartridges are 100% guaranteed to perform flawlessly in your HP Laser Printers. Furthermore, you can be assured that the use of C4129X Toner Cartridges and related replacement supplies will not void the warranty of your printer.