4inkjets offers a set of 4 low-cost, high-quality replacement cartridges for the HP 507X and 507A toner series. The toners available in this set replace the original HP CE400X (507X high yield black), CE401A (507A cyan), CE403A (507A magenta) and CE402A (507A yellow). Every remanufactured replacement toner for the HP 507A and 507X is guaranteed to perform flawlessly with your HP Printer. 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. The use of LD remanufactured replacement laser toner cartridges and supplies does not void your printer's warranty. LD remanufactured laser cartridges are not remanufactured by HP. Each cartridge is fully Backed by a 2 year guarantee and ship fast!