The Lexmark T644 laser toners from LD Products are professionally remanufactured laser toner cartridges that are Guaranteed to meet or exceed the print quality of the OEM 64015HA and 64415XA toner cartridges. Our Lexmark T644 remanufactured laser toners have new internal parts including OPC drums and wiper blades. Purchasing our Lexmark T644 laser toners is an excellent way to save money without sacrificing quality. Our Lexmark T644 laser toner cartridges have a 'Lifetime Guarantee'. The use of our remanufactured laser toners for the Lexmark T644 does not void your printer's warranty. OEM (Original Equipment Manufacturer) laser toner cartridges are also available for your Lexmark T644 printer.