923 Ink Cartridges Combo Pack Replacement for HP 923 Ink Cartridges Use for 8122e OfficeJet Pro 8135e 8138e 8139e Printer Ink Without Chip 8 Pack 2*Black 2*Cyan 2*Magenta 2*Yellow
Instructions for using the 923 ink cartridge: First, prepare the used 923 original ink cartridge and use a chip removal tool to remove the original chip and install it on the double-sided tape back of the new 923 replacement ink cartridge, and attach the chip. Finally, install the new ink cartridge into the printer to start working