Economink Remanufactured Ink Cartridges Replacement for HP 61 Black Color Combo for Envy 5530 4500 4502 5535 OfficeJet 4630 4635 4632 DeskJet 2540 1010 3050a 2542 2549 3510 2541 2548 1055 1512 Printer

High Performance and Reliability 1) Bright clean chip: the compatibility is much higher. 2) Sprinkler complex optical technology:printing is smoother and more consistent. 3) Quality control:100% post printing test for each cartridge.   ? User Guide For HP 61 Ink Cartridge Combo Pack Attention: Do not touch the chip, if you touch the chip accidentally, wipe it with an eraser. 1) Remove the protective cover 2) Tear off the plastic tape before installing 3) Insert into your printer   ? Compatible Printers Envy 4500 4501 4502 4503 4504 4505 4507 4508 4509 5530 5531 5532 5534 5535 5539 OfficeJet 2620 2621 2622 2623 4630 4631 4632 4634 4635 4636 4639 DeskJet 1000 1010 1011 1012 1015 1050 1050a 1051 1055 1056 1510 1511 1512 1513 1514 1517 2000 2050 2050a 2050s 2054a 2510 2511 2512 2514 2540 2541 2542 2543 DeskJet 2544 2545 2546 2546B 2546P 2546R 2547 2548 2549 3000 3050 3050a 3051 3051a 3052 3052a 3054 3054a 3055a 3056 3056a 3057a 3059a 3060 3510 3511 3512 3516 Desktop 2646 3050A 3051A 3052A 3054A 3056A Tips: After installing, a message "Not Genuine" may pop up, please simply click “Yes”, “Continue”, or “OK” and then continue to print.   ? Pages Yield 750 Pages for 61 Black 450 Pages for 61 Tri-Color (Based on 5% coverage) Tips: Use high-density sponges to increase ink inventory by 2-3 times.   ? What Is Inside 1 x 61 Black 1 x 61 Tri-Color 1 x Installation Guide 1 x Eraser