Features: 1.Excellent print head, ink is even and smooth, and the print quality is clear and delicate 2.Adopt high compatible chip, possess good recognition, stable and reliable performance 3.Good quality ink bring clear and delicate printing, possess high blackness, no disconnection 4.Counting chips, powerful chip intelligent matching rejects no recognition. Comes with a yellow seal, tear off when installing the machine, then you can use 5.No need to tear the protective film of the ink outlet, the machine will automatically pierce through it specification:Item Type: Printer Cartridge Material: Plastic Size: Approx. 5.1 x 1.1 x 9.6cm or 2 x 0.4 x 3.8in(manual measurement, slight error) Capacity: 28ml Number of Pages to be Printed: About 1500 pages (5 percent coverage of A4 paper) Applicable Models: For HP Officejet Pro 8100 or 8600 or 8600PLUS or 8610 or 8615 or 8616 or 8620 or 8625 or 8630 or 8640 or 8650 or 8660 or 251dw or 276dw How to Use: 1. Remove the old ink cartridge 2. Install a new ink cartridge 3. The printer is in normal use PackageList:1 x Printer Cartridge NoteThe sealing label is continuously protected and must be removed before installation, otherwise the ink will not be discharged normally