PREMIUM QULAITY OF HP GENUINE BLACK TONER CARTRIDGES YIELDING 1,000 PAGES. COMPATIBLE PRINTERS (IF ANY): HP OFFICEJET 6100,HP OFFICEJET 6600,HP OFFICEJET 6700,HP OFFICEJET 7610,HP OFFICEJET 7612,HP OFFICEJET 7110,HP OFFICEJET 7510