The compatible Adler T6-77B black printer ribbon cartridge from LD Products delivers professional quality printouts for much less than the original brand. Each compatible T6-77B is manufactured with completely new parts and tested for quality assurance. Stop paying name brand prices and start saving money today with the compatible T6-77B from LD Products. Order with LD Products and receive a 100% guarantee on the 4 million character Adler T6-77B printer ribbon cartridge.