This is a replacement cartridge for the Hewlett Packard C4129X 29X black laser toner cartridge which is manufactured by LD and is guaranteed to perform with your HP printer. It replaces the original HP C4129X toner cartridge. LD remanufactured replacement C4129X laser toner cartridges are specially engineered to meet the highest standards of quality and reliability you can expect from LD. Our toners have exceptional yields that meet or exceed the OEM Original Equipment Manufacturer page yield for the C4129X. Our remanufactured HP 29X contains up to 85% new parts including wiper blades, OPC drums, and other internal components. While most competitors simply refill the toner cartridge and hope the drum and other key components last, we fully disassemble the toner cartridge and rebuild it to ensure the highest quality prints. High quality LD remanufactured C4129X toner cartridges are an economical and sensible alternative to expensive OEM C4129X HP 29X Hewlett Packard laser toner cartridges and supplies. The use of LD remanufactured replacement laser toner cartridges and supplies does not void your printers warranty. LD remanufactured laser cartridges are not remanufactured by HP. LD Products offers a 100% Quality Satisfaction Guarantee on our LD remanufactured C4129X black laser toner cartridges. For use in the following printers LaserJet 5100tn, LaserJet 5100, LaserJet 5000, LaserJet 5000n, LaserJet 5100dtn, LaserJet 5000dn, LaserJet 5000gn.