The HP 20 black inkjet print cartridge features proprietary HP pigmented ink. The HP 20 black inkjet print cartridge works with HP 49 tri-color inkjet print cartridges and the HP 16 photo inkjet print cartridge to deliver crisp black text, vibrant, photo-quality color, and outstanding print quality. Designed for use in HP Deskjet 610C, 612C, 630C, 632C, 640C, 642C, 648C, 656C, FAX 1010/XI/ABL/ABC, 1020, 1040/XI and 1050. Yields approximately 500 pages.